TY  - JOUR
AU  - Jevtić, Sanja
AU  - Rajić, Nevenka
AU  - Kaučič, Venčeslav
PY  - 2013
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2348
AB  - 3-(Methylamino)propylamine (MPA) was studied as a structure-directing agent (template) in the synthesis of open-framework phosphate-based materials. The influence of temperature, mole ratio of reactants, crystallization time and presence of fluoride ions on the crystallization of aluminophosphate, transition metal-substituted aluminophosphate (transition metal - Mn(II), Cr(III) and Co(II)) and zincophosphate was also investigated. MPA exhibited a templating role and in all the as-synthesized crystalline products, it is entrapped in an inorganic lattice interacting with the framework via hydrogen or/and electrostatic interactions. According to detailed thermal analysis, the type of inter-actions seems to be crucial for the thermal behavior of MPA and for the thermal stability of the organic-inorganic crystal system. Structural analysis suggested that the formed crystalline structures had no mutual structural analogy. This indicates that the precise role of the organic (guest) component in nucleation process for the open-framework phosphates (host) is very complex as is the nucleation process itself. .
AB  - 3-(Metlamino)propilamin (MPA) izučavan je kao strukturni agens (templat) u sintezi poroznih materijala na bazi fosfata. Uticaj temperature, molskog odnosa reaktanata, vremena i prisustva fluorid-jona na kristalizaciju alumofosfata, alumofosfata koji u rešetki sadrže jone prelaznih elemenata (prelazni element - Mn(II), Cr(III) i Co(II)) takođe su izučavani. MPA ispoljava svojstva templata i u svim sintetisanim kristalnim proizvodima zarobljen je u neorganskoj rešetki sa kojom ostvaruje vodonične i/ili elektrostatičke interakcije. Prema detaljnoj termičkoj analizi vrsta interakcija je od presudnog značaja za termička svojstva MPA kao i termičku stabilnost čitavog organsko-neorganskog kristalnog sistema. Strukturna analiza je ukazala da među nastalim kristalnim strukturama nema sličnosti. Ovo ukazuje da je uloga organske ('gostujuće') komponente u procesu nukleacije poroznih fosfata složena kao i sam proces nukleacije. .
PB  - Serbian Chemical Society, Belgrade
T2  - Journal of the Serbian Chemical Society
T1  - 3-(Methylamino)propylamine as a templating agent in the synthesis of phosphate-based inorganic polymers
T1  - 3-(Metilamino)propilamin kao strukturni agens u sintezi neorganskih polimera na bazi fosfata
EP  - 1909
IS  - 12
SP  - 1893
VL  - 78
UR  - https://hdl.handle.net/21.15107/rcub_technorep_2348
ER  - 

@article{
author = "Jevtić, Sanja and Rajić, Nevenka and Kaučič, Venčeslav",
year = "2013",
abstract = "3-(Methylamino)propylamine (MPA) was studied as a structure-directing agent (template) in the synthesis of open-framework phosphate-based materials. The influence of temperature, mole ratio of reactants, crystallization time and presence of fluoride ions on the crystallization of aluminophosphate, transition metal-substituted aluminophosphate (transition metal - Mn(II), Cr(III) and Co(II)) and zincophosphate was also investigated. MPA exhibited a templating role and in all the as-synthesized crystalline products, it is entrapped in an inorganic lattice interacting with the framework via hydrogen or/and electrostatic interactions. According to detailed thermal analysis, the type of inter-actions seems to be crucial for the thermal behavior of MPA and for the thermal stability of the organic-inorganic crystal system. Structural analysis suggested that the formed crystalline structures had no mutual structural analogy. This indicates that the precise role of the organic (guest) component in nucleation process for the open-framework phosphates (host) is very complex as is the nucleation process itself. ., 3-(Metlamino)propilamin (MPA) izučavan je kao strukturni agens (templat) u sintezi poroznih materijala na bazi fosfata. Uticaj temperature, molskog odnosa reaktanata, vremena i prisustva fluorid-jona na kristalizaciju alumofosfata, alumofosfata koji u rešetki sadrže jone prelaznih elemenata (prelazni element - Mn(II), Cr(III) i Co(II)) takođe su izučavani. MPA ispoljava svojstva templata i u svim sintetisanim kristalnim proizvodima zarobljen je u neorganskoj rešetki sa kojom ostvaruje vodonične i/ili elektrostatičke interakcije. Prema detaljnoj termičkoj analizi vrsta interakcija je od presudnog značaja za termička svojstva MPA kao i termičku stabilnost čitavog organsko-neorganskog kristalnog sistema. Strukturna analiza je ukazala da među nastalim kristalnim strukturama nema sličnosti. Ovo ukazuje da je uloga organske ('gostujuće') komponente u procesu nukleacije poroznih fosfata složena kao i sam proces nukleacije. .",
publisher = "Serbian Chemical Society, Belgrade",
journal = "Journal of the Serbian Chemical Society",
title = "3-(Methylamino)propylamine as a templating agent in the synthesis of phosphate-based inorganic polymers, 3-(Metilamino)propilamin kao strukturni agens u sintezi neorganskih polimera na bazi fosfata",
pages = "1909-1893",
number = "12",
volume = "78",
url = "https://hdl.handle.net/21.15107/rcub_technorep_2348"
}

Jevtić, S., Rajić, N.,& Kaučič, V.. (2013). 3-(Methylamino)propylamine as a templating agent in the synthesis of phosphate-based inorganic polymers. in Journal of the Serbian Chemical Society
Serbian Chemical Society, Belgrade., 78(12), 1893-1909.
https://hdl.handle.net/21.15107/rcub_technorep_2348

Jevtić S, Rajić N, Kaučič V. 3-(Methylamino)propylamine as a templating agent in the synthesis of phosphate-based inorganic polymers. in Journal of the Serbian Chemical Society. 2013;78(12):1893-1909.
https://hdl.handle.net/21.15107/rcub_technorep_2348 .

Jevtić, Sanja, Rajić, Nevenka, Kaučič, Venčeslav, "3-(Methylamino)propylamine as a templating agent in the synthesis of phosphate-based inorganic polymers" in Journal of the Serbian Chemical Society, 78, no. 12 (2013):1893-1909,
https://hdl.handle.net/21.15107/rcub_technorep_2348 .

TY  - CHAP
AU  - Rajić, Nevenka
AU  - Kaučič, Venčeslav
AU  - Zabukovec Logar, Nataša
PY  - 2011
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6401
AB  - Aluminophosphate molecular sieves exhibit structural and compositional diversity. Their frameworks can be modified by other elements, thus providing novel silicoaluminophosphate (SAPO), metaloaluminophosphate (MAPO), and metalosilicoaluminophosphate (MAPSO) materials. They possess the characteristics of both zeolites and aluminophosphates, all of which result in unique catalytic, ion-exchange, and adsorbent properties. Aluminophosphate molecular sieves have been prepared hydrothermally in nonaqueous reaction media. The crystallization process depends on a number of variables including temperature, time, molar ratio of the reactants, and pH. The most commonly investigated metal ions incorporated into aluminophosphate frameworks are transition metal ions of first transition series. Different characterization techniques are used for studying their oxidation number, location, and coordination environment within aluminophosphate frameworks. These parameters, together with structural characteristics of the framework such as pore size, pore shape, and geometry, significantly affect the catalytic performance of aluminophosphate materials. Methanol-to-olefin conversion and oxidation reactions are instances of industrially important reaction systems where aluminophosphate molecular sieves demonstrate an important catalytic performance
PB  - John Wiley and Sons Inc
T2  - Encyclopedia of Catalysis
T1  - Molecular Sieves: Aluminophosphates
DO  - 10.1002/0471227617.eoc151.pub2
ER  - 

@inbook{
author = "Rajić, Nevenka and Kaučič, Venčeslav and Zabukovec Logar, Nataša",
year = "2011",
abstract = "Aluminophosphate molecular sieves exhibit structural and compositional diversity. Their frameworks can be modified by other elements, thus providing novel silicoaluminophosphate (SAPO), metaloaluminophosphate (MAPO), and metalosilicoaluminophosphate (MAPSO) materials. They possess the characteristics of both zeolites and aluminophosphates, all of which result in unique catalytic, ion-exchange, and adsorbent properties. Aluminophosphate molecular sieves have been prepared hydrothermally in nonaqueous reaction media. The crystallization process depends on a number of variables including temperature, time, molar ratio of the reactants, and pH. The most commonly investigated metal ions incorporated into aluminophosphate frameworks are transition metal ions of first transition series. Different characterization techniques are used for studying their oxidation number, location, and coordination environment within aluminophosphate frameworks. These parameters, together with structural characteristics of the framework such as pore size, pore shape, and geometry, significantly affect the catalytic performance of aluminophosphate materials. Methanol-to-olefin conversion and oxidation reactions are instances of industrially important reaction systems where aluminophosphate molecular sieves demonstrate an important catalytic performance",
publisher = "John Wiley and Sons Inc",
journal = "Encyclopedia of Catalysis",
booktitle = "Molecular Sieves: Aluminophosphates",
doi = "10.1002/0471227617.eoc151.pub2"
}

Rajić, N., Kaučič, V.,& Zabukovec Logar, N.. (2011). Molecular Sieves: Aluminophosphates. in Encyclopedia of Catalysis
John Wiley and Sons Inc..
https://doi.org/10.1002/0471227617.eoc151.pub2

Rajić N, Kaučič V, Zabukovec Logar N. Molecular Sieves: Aluminophosphates. in Encyclopedia of Catalysis. 2011;.
doi:10.1002/0471227617.eoc151.pub2 .

Rajić, Nevenka, Kaučič, Venčeslav, Zabukovec Logar, Nataša, "Molecular Sieves: Aluminophosphates" in Encyclopedia of Catalysis (2011),
https://doi.org/10.1002/0471227617.eoc151.pub2 . .

TY  - JOUR
AU  - Rajić, Nevenka
AU  - Stojaković, Đorđe
AU  - Jevtić, Sanja
AU  - Zabukovec-Logar, Nataša
AU  - Mali, Gregor
AU  - Kaučič, Venčeslav
PY  - 2010
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1638
AB  - An open-framework aluminophosphate analog of the fluorogallophosphate structure-type ULM-3 was obtained by hydrothermal crystallization of an aqueous aluminum phosphate suspension in the presence of 3-methylpropylamine (MAPA) and hydrofluoric acid. The open-framework fluorinated aluminophosphate structure was confirmed by Rietveld analysis and the (27)Al, (31)P, and (19)F MAS NMR spectroscopy. The MAPA, located in the ten-membered ring channels, is doubly protonated to balance the negative charge of the Al(3)P(3)O(12)F(2) (2-) framework. Thermogravimetric analysis data have been used to study kinetics of the thermal decomposition of MAPA. The decomposition was found to be a complex process, its activation energy varied from 177 to 259 kJ mol(-1). The relatively high E values are explained by the fact that the MAPA cations are bound to the anionic framework both by electrostatic forces as well as strong N-HaEuro broken vertical bar O hydrogen bonds. The strength of the interactions is indirectly confirmed by the in situ high temperature X-ray diffraction analysis which shows that the MAPA decomposition leads to a phase transformation of the open-framework structure to the dense trydimite phase.
PB  - Springer, Dordrecht
T2  - Journal of Thermal Analysis and Calorimetry
T1  - On the thermal degradation of 3-methylaminopropylamine captured inside the aluminum phosphate analog of ULM-3
EP  - 924
IS  - 3
SP  - 919
VL  - 101
DO  - 10.1007/s10973-009-0504-7
ER  - 

@article{
author = "Rajić, Nevenka and Stojaković, Đorđe and Jevtić, Sanja and Zabukovec-Logar, Nataša and Mali, Gregor and Kaučič, Venčeslav",
year = "2010",
abstract = "An open-framework aluminophosphate analog of the fluorogallophosphate structure-type ULM-3 was obtained by hydrothermal crystallization of an aqueous aluminum phosphate suspension in the presence of 3-methylpropylamine (MAPA) and hydrofluoric acid. The open-framework fluorinated aluminophosphate structure was confirmed by Rietveld analysis and the (27)Al, (31)P, and (19)F MAS NMR spectroscopy. The MAPA, located in the ten-membered ring channels, is doubly protonated to balance the negative charge of the Al(3)P(3)O(12)F(2) (2-) framework. Thermogravimetric analysis data have been used to study kinetics of the thermal decomposition of MAPA. The decomposition was found to be a complex process, its activation energy varied from 177 to 259 kJ mol(-1). The relatively high E values are explained by the fact that the MAPA cations are bound to the anionic framework both by electrostatic forces as well as strong N-HaEuro broken vertical bar O hydrogen bonds. The strength of the interactions is indirectly confirmed by the in situ high temperature X-ray diffraction analysis which shows that the MAPA decomposition leads to a phase transformation of the open-framework structure to the dense trydimite phase.",
publisher = "Springer, Dordrecht",
journal = "Journal of Thermal Analysis and Calorimetry",
title = "On the thermal degradation of 3-methylaminopropylamine captured inside the aluminum phosphate analog of ULM-3",
pages = "924-919",
number = "3",
volume = "101",
doi = "10.1007/s10973-009-0504-7"
}

Rajić, N., Stojaković, Đ., Jevtić, S., Zabukovec-Logar, N., Mali, G.,& Kaučič, V.. (2010). On the thermal degradation of 3-methylaminopropylamine captured inside the aluminum phosphate analog of ULM-3. in Journal of Thermal Analysis and Calorimetry
Springer, Dordrecht., 101(3), 919-924.
https://doi.org/10.1007/s10973-009-0504-7

Rajić N, Stojaković Đ, Jevtić S, Zabukovec-Logar N, Mali G, Kaučič V. On the thermal degradation of 3-methylaminopropylamine captured inside the aluminum phosphate analog of ULM-3. in Journal of Thermal Analysis and Calorimetry. 2010;101(3):919-924.
doi:10.1007/s10973-009-0504-7 .

Rajić, Nevenka, Stojaković, Đorđe, Jevtić, Sanja, Zabukovec-Logar, Nataša, Mali, Gregor, Kaučič, Venčeslav, "On the thermal degradation of 3-methylaminopropylamine captured inside the aluminum phosphate analog of ULM-3" in Journal of Thermal Analysis and Calorimetry, 101, no. 3 (2010):919-924,
https://doi.org/10.1007/s10973-009-0504-7 . .

TY  - JOUR
AU  - Zabukovec-Logar, Nataša
AU  - Mali, Gregor
AU  - Rajić, Nevenka
AU  - Jevtić, Sanja
AU  - Rangus, Mojca
AU  - Golobić, Amalija
AU  - Kaučič, Venčeslav
PY  - 2010
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1699
AB  - A single-crystal X-ray diffraction analysis of an open-framework aluminophosphate ULM-3 Al prepared by 3-methylaminopropylamine (MAPA) as structure-directing agent revealed an orthorhombic Pcab symmetry (a=9.9949(4)angstrom, b=15.8229(7)angstrom, c=18.1963(5)angstrom, R=0.0648, Z=8, unit cell formula (Al24P24O96F16 center dot C32H112N16]). which differs from the Pbc2(1) symmetry of the structural analogue prepared in the presence of 1,4-diaminobutane. The Al-27, P-31, F-19, C-13 and H-1 NMR investigations, which were performed to study in detail MAPA arrangement inside the framework as well as the interactions of MAPA with the aluminophosphate host, confirmed the crystal symmetry and the proposed hydrogen bonding scheme between the template and the framework.
PB  - Academic Press Inc Elsevier Science, San Diego
T2  - Journal of Solid State Chemistry
T1  - Structure investigation of fluorinated aluminophosphate ULM-3 Al templated by 3-methylaminopropylamine
EP  - 1062
IS  - 5
SP  - 1055
VL  - 183
DO  - 10.1016/j.jssc.2010.02.020
ER  - 

@article{
author = "Zabukovec-Logar, Nataša and Mali, Gregor and Rajić, Nevenka and Jevtić, Sanja and Rangus, Mojca and Golobić, Amalija and Kaučič, Venčeslav",
year = "2010",
abstract = "A single-crystal X-ray diffraction analysis of an open-framework aluminophosphate ULM-3 Al prepared by 3-methylaminopropylamine (MAPA) as structure-directing agent revealed an orthorhombic Pcab symmetry (a=9.9949(4)angstrom, b=15.8229(7)angstrom, c=18.1963(5)angstrom, R=0.0648, Z=8, unit cell formula (Al24P24O96F16 center dot C32H112N16]). which differs from the Pbc2(1) symmetry of the structural analogue prepared in the presence of 1,4-diaminobutane. The Al-27, P-31, F-19, C-13 and H-1 NMR investigations, which were performed to study in detail MAPA arrangement inside the framework as well as the interactions of MAPA with the aluminophosphate host, confirmed the crystal symmetry and the proposed hydrogen bonding scheme between the template and the framework.",
publisher = "Academic Press Inc Elsevier Science, San Diego",
journal = "Journal of Solid State Chemistry",
title = "Structure investigation of fluorinated aluminophosphate ULM-3 Al templated by 3-methylaminopropylamine",
pages = "1062-1055",
number = "5",
volume = "183",
doi = "10.1016/j.jssc.2010.02.020"
}

Zabukovec-Logar, N., Mali, G., Rajić, N., Jevtić, S., Rangus, M., Golobić, A.,& Kaučič, V.. (2010). Structure investigation of fluorinated aluminophosphate ULM-3 Al templated by 3-methylaminopropylamine. in Journal of Solid State Chemistry
Academic Press Inc Elsevier Science, San Diego., 183(5), 1055-1062.
https://doi.org/10.1016/j.jssc.2010.02.020

Zabukovec-Logar N, Mali G, Rajić N, Jevtić S, Rangus M, Golobić A, Kaučič V. Structure investigation of fluorinated aluminophosphate ULM-3 Al templated by 3-methylaminopropylamine. in Journal of Solid State Chemistry. 2010;183(5):1055-1062.
doi:10.1016/j.jssc.2010.02.020 .

Zabukovec-Logar, Nataša, Mali, Gregor, Rajić, Nevenka, Jevtić, Sanja, Rangus, Mojca, Golobić, Amalija, Kaučič, Venčeslav, "Structure investigation of fluorinated aluminophosphate ULM-3 Al templated by 3-methylaminopropylamine" in Journal of Solid State Chemistry, 183, no. 5 (2010):1055-1062,
https://doi.org/10.1016/j.jssc.2010.02.020 . .

TY  - JOUR
AU  - Rajić, Nevenka
AU  - Stojaković, Đorđe
AU  - Jovanović, Mina
AU  - Zabukovec-Logar, Nataša
AU  - Mazaj, Matjaz
AU  - Kaučič, Venčeslav
PY  - 2010
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1726
AB  - The natural zeolite tuff (clinoptilolite) from a Serbian deposit has been studied as adsorbent for Ni(II) ions from aqueous solutions. Its sorption capacity at 298K varies from 1.9mg Nig(-1) (for the initial solution concentration of 100mg Nidm(-3)) to 3.8mg Nig(-1) (for C-0 = 600mgNidm(-3)) and it increases 3 times at 338 K. The sorption is best described by the Sips isotherm model. The sorption kinetics follows the pseudo-second-order model, the activation energies being 7.44, 5.86, 6.62 and 6.63 kJ mol(-1) for C-0 = 100, 200, 300 and 400mg Nidm(-3), respectively. The sorption involves a film diffusion, an intra-particle diffusion, and a chemical cation-exchange between the Na+ ions of clinoptilolite and the Ni2+ ions. The sorption is endothermic (Delta H degrees being 37.9, 33.4, 30.0, 27.7 and 24.3 kJ mol(-1) for C-0 = 100, 200, 300, 400 and 600mg Nidm(-3), respectively) and spontaneous in the 298-338K temperature range. Thermal treatment of the Ni(II)-loaded clinoptilolite results in the formation of spherical nano-NiO particles of approx. 5 nm in diameter which are randomly dispersed in the clinoptilolite lattice.
PB  - Elsevier Science Bv, Amsterdam
T2  - Applied Surface Science
T1  - Removal of nickel(II) ions from aqueous solutions using the natural clinoptilolite and preparation of nano-NiO on the exhausted clinoptilolite
EP  - 1532
IS  - 5
SP  - 1524
VL  - 257
DO  - 10.1016/j.apsusc.2010.08.090
ER  - 

@article{
author = "Rajić, Nevenka and Stojaković, Đorđe and Jovanović, Mina and Zabukovec-Logar, Nataša and Mazaj, Matjaz and Kaučič, Venčeslav",
year = "2010",
abstract = "The natural zeolite tuff (clinoptilolite) from a Serbian deposit has been studied as adsorbent for Ni(II) ions from aqueous solutions. Its sorption capacity at 298K varies from 1.9mg Nig(-1) (for the initial solution concentration of 100mg Nidm(-3)) to 3.8mg Nig(-1) (for C-0 = 600mgNidm(-3)) and it increases 3 times at 338 K. The sorption is best described by the Sips isotherm model. The sorption kinetics follows the pseudo-second-order model, the activation energies being 7.44, 5.86, 6.62 and 6.63 kJ mol(-1) for C-0 = 100, 200, 300 and 400mg Nidm(-3), respectively. The sorption involves a film diffusion, an intra-particle diffusion, and a chemical cation-exchange between the Na+ ions of clinoptilolite and the Ni2+ ions. The sorption is endothermic (Delta H degrees being 37.9, 33.4, 30.0, 27.7 and 24.3 kJ mol(-1) for C-0 = 100, 200, 300, 400 and 600mg Nidm(-3), respectively) and spontaneous in the 298-338K temperature range. Thermal treatment of the Ni(II)-loaded clinoptilolite results in the formation of spherical nano-NiO particles of approx. 5 nm in diameter which are randomly dispersed in the clinoptilolite lattice.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Applied Surface Science",
title = "Removal of nickel(II) ions from aqueous solutions using the natural clinoptilolite and preparation of nano-NiO on the exhausted clinoptilolite",
pages = "1532-1524",
number = "5",
volume = "257",
doi = "10.1016/j.apsusc.2010.08.090"
}

Rajić, N., Stojaković, Đ., Jovanović, M., Zabukovec-Logar, N., Mazaj, M.,& Kaučič, V.. (2010). Removal of nickel(II) ions from aqueous solutions using the natural clinoptilolite and preparation of nano-NiO on the exhausted clinoptilolite. in Applied Surface Science
Elsevier Science Bv, Amsterdam., 257(5), 1524-1532.
https://doi.org/10.1016/j.apsusc.2010.08.090

Rajić N, Stojaković Đ, Jovanović M, Zabukovec-Logar N, Mazaj M, Kaučič V. Removal of nickel(II) ions from aqueous solutions using the natural clinoptilolite and preparation of nano-NiO on the exhausted clinoptilolite. in Applied Surface Science. 2010;257(5):1524-1532.
doi:10.1016/j.apsusc.2010.08.090 .

Rajić, Nevenka, Stojaković, Đorđe, Jovanović, Mina, Zabukovec-Logar, Nataša, Mazaj, Matjaz, Kaučič, Venčeslav, "Removal of nickel(II) ions from aqueous solutions using the natural clinoptilolite and preparation of nano-NiO on the exhausted clinoptilolite" in Applied Surface Science, 257, no. 5 (2010):1524-1532,
https://doi.org/10.1016/j.apsusc.2010.08.090 . .

TY  - JOUR
AU  - Rajić, Nevenka
AU  - Stojaković, Đorđe
AU  - Jevtić, Sanja
AU  - Zabukovec-Logar, Nataša
AU  - Kovač, Janez
AU  - Kaučič, Venčeslav
PY  - 2009
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1467
AB  - The natural zeolite tuff from the Vranjska Banja deposit (Serbia) has been studied as sorbent for Mn(II) ions from aqueous solutions. The zeolite sample containing mainly clinoptilolite (more than 70%) removes Mn(II) ions by ion-exchange process, which was confirmed by X-ray photoelectron spectroscopy (XPS) and energy dispersive X-ray analysis (EDXS). XPS showed that there is no surface accumulation of Mn but an almost uniform distribution inside the sorbent; EDXS confirmed that Mn(II) replaced the clinoptilolite Na counter ions. The sorption isotherms were studied at 298 K by batch experiments showing that the Mn(II) removal is best described by the Langmuir-Freundlich or Sips model. The kinetics followed the pseudo-second-order model, the activation energy being 128 kJ mol(-1). The intra-particle diffusion is not the rate-controlling step in the sorption of Mn(II) on clinoptilolite. Thermodynamic data suggest spontaneity of the endothermic ion-exchange process in the 298-338 K range.
PB  - Elsevier, Amsterdam
T2  - Journal of Hazardous Materials
T1  - Removal of aqueous manganese using the natural zeolitic tuff from the Vranjska Banja deposit in Serbia
EP  - 1457
IS  - 2-3
SP  - 1450
VL  - 172
DO  - 10.1016/j.jhazmat.2009.08.011
ER  - 

@article{
author = "Rajić, Nevenka and Stojaković, Đorđe and Jevtić, Sanja and Zabukovec-Logar, Nataša and Kovač, Janez and Kaučič, Venčeslav",
year = "2009",
abstract = "The natural zeolite tuff from the Vranjska Banja deposit (Serbia) has been studied as sorbent for Mn(II) ions from aqueous solutions. The zeolite sample containing mainly clinoptilolite (more than 70%) removes Mn(II) ions by ion-exchange process, which was confirmed by X-ray photoelectron spectroscopy (XPS) and energy dispersive X-ray analysis (EDXS). XPS showed that there is no surface accumulation of Mn but an almost uniform distribution inside the sorbent; EDXS confirmed that Mn(II) replaced the clinoptilolite Na counter ions. The sorption isotherms were studied at 298 K by batch experiments showing that the Mn(II) removal is best described by the Langmuir-Freundlich or Sips model. The kinetics followed the pseudo-second-order model, the activation energy being 128 kJ mol(-1). The intra-particle diffusion is not the rate-controlling step in the sorption of Mn(II) on clinoptilolite. Thermodynamic data suggest spontaneity of the endothermic ion-exchange process in the 298-338 K range.",
publisher = "Elsevier, Amsterdam",
journal = "Journal of Hazardous Materials",
title = "Removal of aqueous manganese using the natural zeolitic tuff from the Vranjska Banja deposit in Serbia",
pages = "1457-1450",
number = "2-3",
volume = "172",
doi = "10.1016/j.jhazmat.2009.08.011"
}

Rajić, N., Stojaković, Đ., Jevtić, S., Zabukovec-Logar, N., Kovač, J.,& Kaučič, V.. (2009). Removal of aqueous manganese using the natural zeolitic tuff from the Vranjska Banja deposit in Serbia. in Journal of Hazardous Materials
Elsevier, Amsterdam., 172(2-3), 1450-1457.
https://doi.org/10.1016/j.jhazmat.2009.08.011

Rajić N, Stojaković Đ, Jevtić S, Zabukovec-Logar N, Kovač J, Kaučič V. Removal of aqueous manganese using the natural zeolitic tuff from the Vranjska Banja deposit in Serbia. in Journal of Hazardous Materials. 2009;172(2-3):1450-1457.
doi:10.1016/j.jhazmat.2009.08.011 .

Rajić, Nevenka, Stojaković, Đorđe, Jevtić, Sanja, Zabukovec-Logar, Nataša, Kovač, Janez, Kaučič, Venčeslav, "Removal of aqueous manganese using the natural zeolitic tuff from the Vranjska Banja deposit in Serbia" in Journal of Hazardous Materials, 172, no. 2-3 (2009):1450-1457,
https://doi.org/10.1016/j.jhazmat.2009.08.011 . .

TY  - JOUR
AU  - Stojaković, Đorđe
AU  - Rajić, Nevenka
AU  - Rakić, Vesna M.
AU  - Zabukovec-Logar, Nataša
AU  - Kaučič, Venčeslav
PY  - 2009
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1519
AB  - A zinc phosphate with the composition [NH3-CH2-CH(NH3)-CH3](ZnPO4)(2), containing the doubly protonated 1,2-diaminopropane (abbr. HDAP), was synthesized by hydrothermal crystallization of zinc nitrate, phosphoric acid, 1,2-diaminopropane and trimethylenedipiperidine. The single crystal analysis shows a layered inorganic-organic structure built up of a sandwich-like motif of alternating inorganic layers and HDAP cations (trimethylenedipiperidine not being a constituent of the structure). The HDAP species are found to be disordered and serve as bridges between two adjacent inorganic layers which are separated by 3.95 angstrom. The bridging interaction occurs via a hydrogen-bonding network. The inorganic layer features a pattern of four-membered rings involving two ZnO4 and two PO4 tetrahedra connected by sharing O atoms. Thermal analysis shows that the compound is stable up to 370 degrees C and that the thermal decomposition of HDAP occurs in two steps between 370 and 460 degrees C, causing the collapse of the structure. The first decomposition step corresponds to ammonia removal which proceeds with a high activation energy (E-a = 282 kJ mol (1)). The high E-a value is mainly attributed to strong electrostatic interactions between organic cations and anionic inorganic layers, the disruption of the interactions being the main reason for structural collapse after the HDAP removal.
PB  - Elsevier Science Sa, Lausanne
T2  - Inorganica Chimica Acta
T1  - Structure and thermal behavior of the layered zincophosphate [NH3-CH2-CH(NH3)-CH3](ZnPO4)(2)
EP  - 1995
IS  - 6
SP  - 1991
VL  - 362
DO  - 10.1016/j.ica.2008.09.020
ER  - 

@article{
author = "Stojaković, Đorđe and Rajić, Nevenka and Rakić, Vesna M. and Zabukovec-Logar, Nataša and Kaučič, Venčeslav",
year = "2009",
abstract = "A zinc phosphate with the composition [NH3-CH2-CH(NH3)-CH3](ZnPO4)(2), containing the doubly protonated 1,2-diaminopropane (abbr. HDAP), was synthesized by hydrothermal crystallization of zinc nitrate, phosphoric acid, 1,2-diaminopropane and trimethylenedipiperidine. The single crystal analysis shows a layered inorganic-organic structure built up of a sandwich-like motif of alternating inorganic layers and HDAP cations (trimethylenedipiperidine not being a constituent of the structure). The HDAP species are found to be disordered and serve as bridges between two adjacent inorganic layers which are separated by 3.95 angstrom. The bridging interaction occurs via a hydrogen-bonding network. The inorganic layer features a pattern of four-membered rings involving two ZnO4 and two PO4 tetrahedra connected by sharing O atoms. Thermal analysis shows that the compound is stable up to 370 degrees C and that the thermal decomposition of HDAP occurs in two steps between 370 and 460 degrees C, causing the collapse of the structure. The first decomposition step corresponds to ammonia removal which proceeds with a high activation energy (E-a = 282 kJ mol (1)). The high E-a value is mainly attributed to strong electrostatic interactions between organic cations and anionic inorganic layers, the disruption of the interactions being the main reason for structural collapse after the HDAP removal.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Inorganica Chimica Acta",
title = "Structure and thermal behavior of the layered zincophosphate [NH3-CH2-CH(NH3)-CH3](ZnPO4)(2)",
pages = "1995-1991",
number = "6",
volume = "362",
doi = "10.1016/j.ica.2008.09.020"
}

Stojaković, Đ., Rajić, N., Rakić, V. M., Zabukovec-Logar, N.,& Kaučič, V.. (2009). Structure and thermal behavior of the layered zincophosphate [NH3-CH2-CH(NH3)-CH3](ZnPO4)(2). in Inorganica Chimica Acta
Elsevier Science Sa, Lausanne., 362(6), 1991-1995.
https://doi.org/10.1016/j.ica.2008.09.020

Stojaković Đ, Rajić N, Rakić VM, Zabukovec-Logar N, Kaučič V. Structure and thermal behavior of the layered zincophosphate [NH3-CH2-CH(NH3)-CH3](ZnPO4)(2). in Inorganica Chimica Acta. 2009;362(6):1991-1995.
doi:10.1016/j.ica.2008.09.020 .

Stojaković, Đorđe, Rajić, Nevenka, Rakić, Vesna M., Zabukovec-Logar, Nataša, Kaučič, Venčeslav, "Structure and thermal behavior of the layered zincophosphate [NH3-CH2-CH(NH3)-CH3](ZnPO4)(2)" in Inorganica Chimica Acta, 362, no. 6 (2009):1991-1995,
https://doi.org/10.1016/j.ica.2008.09.020 . .

TY  - CONF
AU  - Rajić, Nevenka
AU  - Stojaković, Đorđe
AU  - Mrak, Maja
AU  - Kaučič, Venčeslav
PY  - 2008
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6408
AB  - An efficient removal of the organic component from the as-synthesized solid in order to access the
internal free space is an important step in the final preparation of the porous materials. Recently, kinetic studies of the cetyltrimethylammonium bromide (CTMAB) removal from the MCM-41 and MCM-48 have shown that the CTMAB removal proceeds by very high activation energy indicating that the interactions of the CTMAB with silica framework are very strong. Preparation of mesoporous SBA-3 proceeds also in the presence of CTMAB; however, in contrast to the synthesis of MCM-41 and MCM-48 which is carried out under alkaline conditions, crystallization of the SBA-3 occurs in strongly acidic solution. This causes the interaction of CTMAB with the SBA-3 network to be different from its interaction with the MCM network since the SBA-3 network is electrically neutral while the MCM network is negatively charged. Thermal degradation of CTMAB inside the mesoporous SBA-3 has been studied under non-isothermal conditions. There are two distinct kinetic processes, which can be described by the Sestak-Berggren model. The main decomposition step proceeds with Ea = 116±2 kJ/mol which is significantly lower than for the MCM-41 and MCM-48, suggesting that the interaction between CTMAB and the silica network is the dominant factor in the removal of the surfactant. The second decomposition step has a higher Ea  value (153±5 kJ/mol) than the first step, indicating that it is primarily controlled by the size of the pore openings.
C3  - 4th FEZA CONFERENCE Collège de France PARIS
T1  - A kinetic study of the thermal degradation of cetyltrimethylammonium bromide inside the mesoporous SBA-3 molecular sieve
IS  - PIII-G34
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6408
ER  - 

@conference{
author = "Rajić, Nevenka and Stojaković, Đorđe and Mrak, Maja and Kaučič, Venčeslav",
year = "2008",
abstract = "An efficient removal of the organic component from the as-synthesized solid in order to access the
internal free space is an important step in the final preparation of the porous materials. Recently, kinetic studies of the cetyltrimethylammonium bromide (CTMAB) removal from the MCM-41 and MCM-48 have shown that the CTMAB removal proceeds by very high activation energy indicating that the interactions of the CTMAB with silica framework are very strong. Preparation of mesoporous SBA-3 proceeds also in the presence of CTMAB; however, in contrast to the synthesis of MCM-41 and MCM-48 which is carried out under alkaline conditions, crystallization of the SBA-3 occurs in strongly acidic solution. This causes the interaction of CTMAB with the SBA-3 network to be different from its interaction with the MCM network since the SBA-3 network is electrically neutral while the MCM network is negatively charged. Thermal degradation of CTMAB inside the mesoporous SBA-3 has been studied under non-isothermal conditions. There are two distinct kinetic processes, which can be described by the Sestak-Berggren model. The main decomposition step proceeds with Ea = 116±2 kJ/mol which is significantly lower than for the MCM-41 and MCM-48, suggesting that the interaction between CTMAB and the silica network is the dominant factor in the removal of the surfactant. The second decomposition step has a higher Ea  value (153±5 kJ/mol) than the first step, indicating that it is primarily controlled by the size of the pore openings.",
journal = "4th FEZA CONFERENCE Collège de France PARIS",
title = "A kinetic study of the thermal degradation of cetyltrimethylammonium bromide inside the mesoporous SBA-3 molecular sieve",
number = "PIII-G34",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6408"
}

Rajić, N., Stojaković, Đ., Mrak, M.,& Kaučič, V.. (2008). A kinetic study of the thermal degradation of cetyltrimethylammonium bromide inside the mesoporous SBA-3 molecular sieve. in 4th FEZA CONFERENCE Collège de France PARIS(PIII-G34).
https://hdl.handle.net/21.15107/rcub_technorep_6408

Rajić N, Stojaković Đ, Mrak M, Kaučič V. A kinetic study of the thermal degradation of cetyltrimethylammonium bromide inside the mesoporous SBA-3 molecular sieve. in 4th FEZA CONFERENCE Collège de France PARIS. 2008;(PIII-G34).
https://hdl.handle.net/21.15107/rcub_technorep_6408 .

Rajić, Nevenka, Stojaković, Đorđe, Mrak, Maja, Kaučič, Venčeslav, "A kinetic study of the thermal degradation of cetyltrimethylammonium bromide inside the mesoporous SBA-3 molecular sieve" in 4th FEZA CONFERENCE Collège de France PARIS, no. PIII-G34 (2008),
https://hdl.handle.net/21.15107/rcub_technorep_6408 .

TY  - JOUR
AU  - Rajić, Nevenka
AU  - Stojaković, Đorđe
AU  - Mrak, Maja
AU  - Kaučič, Venčeslav
PY  - 2008
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1352
AB  - Thermal degradation of cetyltrimethylammonium bromide (CTMAB) inside the mesoporous SBA-3 has been studied under non-isothermal conditions. There are two distinct although partly overlapping kinetic processes, and both of them can be described by the Sestak-Berggren model. The main decomposition step proceeds with E(a) = 116 +/- 2 kJ/mol which is significantly lower than for the mesoporous MCM-41 and MCM-48 suggesting that the interaction between CTMAB and the silica network plays a crucial role in the removal of the surfactant from the as-synthesized material. The second decomposition step has a higher E(a) value (E(a) = 153 +/- 5 kJ/mol) than the first step, indicating that it is primarily controlled by the size of the pore openings.
PB  - Elsevier Science Bv, Amsterdam
T2  - Zeolites and Related Materials: Trends, Targets and Challenges, Proceedings of the 4th International
T1  - A kinetic study of the thermal degradation of cetyltrimethylammonium bromide inside the mesoporous SBA-3 molecular sieve
EP  - 980
SP  - 977
VL  - 174
UR  - https://hdl.handle.net/21.15107/rcub_technorep_1352
ER  - 

@article{
author = "Rajić, Nevenka and Stojaković, Đorđe and Mrak, Maja and Kaučič, Venčeslav",
year = "2008",
abstract = "Thermal degradation of cetyltrimethylammonium bromide (CTMAB) inside the mesoporous SBA-3 has been studied under non-isothermal conditions. There are two distinct although partly overlapping kinetic processes, and both of them can be described by the Sestak-Berggren model. The main decomposition step proceeds with E(a) = 116 +/- 2 kJ/mol which is significantly lower than for the mesoporous MCM-41 and MCM-48 suggesting that the interaction between CTMAB and the silica network plays a crucial role in the removal of the surfactant from the as-synthesized material. The second decomposition step has a higher E(a) value (E(a) = 153 +/- 5 kJ/mol) than the first step, indicating that it is primarily controlled by the size of the pore openings.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Zeolites and Related Materials: Trends, Targets and Challenges, Proceedings of the 4th International",
title = "A kinetic study of the thermal degradation of cetyltrimethylammonium bromide inside the mesoporous SBA-3 molecular sieve",
pages = "980-977",
volume = "174",
url = "https://hdl.handle.net/21.15107/rcub_technorep_1352"
}

Rajić, N., Stojaković, Đ., Mrak, M.,& Kaučič, V.. (2008). A kinetic study of the thermal degradation of cetyltrimethylammonium bromide inside the mesoporous SBA-3 molecular sieve. in Zeolites and Related Materials: Trends, Targets and Challenges, Proceedings of the 4th International
Elsevier Science Bv, Amsterdam., 174, 977-980.
https://hdl.handle.net/21.15107/rcub_technorep_1352

Rajić N, Stojaković Đ, Mrak M, Kaučič V. A kinetic study of the thermal degradation of cetyltrimethylammonium bromide inside the mesoporous SBA-3 molecular sieve. in Zeolites and Related Materials: Trends, Targets and Challenges, Proceedings of the 4th International. 2008;174:977-980.
https://hdl.handle.net/21.15107/rcub_technorep_1352 .

Rajić, Nevenka, Stojaković, Đorđe, Mrak, Maja, Kaučič, Venčeslav, "A kinetic study of the thermal degradation of cetyltrimethylammonium bromide inside the mesoporous SBA-3 molecular sieve" in Zeolites and Related Materials: Trends, Targets and Challenges, Proceedings of the 4th International, 174 (2008):977-980,
https://hdl.handle.net/21.15107/rcub_technorep_1352 .

TY  - JOUR
AU  - Rajić, Nevenka
AU  - Stojaković, D.
AU  - Mrak, Maja
AU  - Kaučič, Venčeslav
PY  - 2008
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1208
AB  - Thermal degradation of cetyltrimethylarnmonium bromide (CTMAB) inside the mesoporous SBA-3 has been studied under non-isothermal conditions. There are two distinct although partly overlapping kinetic processes, and both of them can be described by the Sestak-Berggren model. The main decomposition step proceeds with Ea = 116±2 kJ/mol which is significantly lower than for the mesoporous MCM-41 and MCM-48 suggesting that the interaction between CTMAB and the silica network plays a crucial role in the removal of the surfactant from the as-synthesized material. The second decomposition step has a higher Ea value (Ea = 153±5 kJ/mol) than the first step, indicating that it is primarily controlled by the size of the pore openings.
PB  - Elsevier Science Bv, Amsterdam
T2  - Studies in Surface Science and Catalysis
T1  - A kinetic study of the thermal degradation of cetyltrimethylammonium bromide inside the mesoporous SBA-3 molecular sieve
EP  - 980
IS  - B
SP  - 977
VL  - 174
DO  - 10.1016/S0167-2991(08)80053-5
ER  - 

@article{
author = "Rajić, Nevenka and Stojaković, D. and Mrak, Maja and Kaučič, Venčeslav",
year = "2008",
abstract = "Thermal degradation of cetyltrimethylarnmonium bromide (CTMAB) inside the mesoporous SBA-3 has been studied under non-isothermal conditions. There are two distinct although partly overlapping kinetic processes, and both of them can be described by the Sestak-Berggren model. The main decomposition step proceeds with Ea = 116±2 kJ/mol which is significantly lower than for the mesoporous MCM-41 and MCM-48 suggesting that the interaction between CTMAB and the silica network plays a crucial role in the removal of the surfactant from the as-synthesized material. The second decomposition step has a higher Ea value (Ea = 153±5 kJ/mol) than the first step, indicating that it is primarily controlled by the size of the pore openings.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Studies in Surface Science and Catalysis",
title = "A kinetic study of the thermal degradation of cetyltrimethylammonium bromide inside the mesoporous SBA-3 molecular sieve",
pages = "980-977",
number = "B",
volume = "174",
doi = "10.1016/S0167-2991(08)80053-5"
}

Rajić, N., Stojaković, D., Mrak, M.,& Kaučič, V.. (2008). A kinetic study of the thermal degradation of cetyltrimethylammonium bromide inside the mesoporous SBA-3 molecular sieve. in Studies in Surface Science and Catalysis
Elsevier Science Bv, Amsterdam., 174(B), 977-980.
https://doi.org/10.1016/S0167-2991(08)80053-5

Rajić N, Stojaković D, Mrak M, Kaučič V. A kinetic study of the thermal degradation of cetyltrimethylammonium bromide inside the mesoporous SBA-3 molecular sieve. in Studies in Surface Science and Catalysis. 2008;174(B):977-980.
doi:10.1016/S0167-2991(08)80053-5 .

Rajić, Nevenka, Stojaković, D., Mrak, Maja, Kaučič, Venčeslav, "A kinetic study of the thermal degradation of cetyltrimethylammonium bromide inside the mesoporous SBA-3 molecular sieve" in Studies in Surface Science and Catalysis, 174, no. B (2008):977-980,
https://doi.org/10.1016/S0167-2991(08)80053-5 . .

TY  - JOUR
AU  - Stojaković, Đorđe
AU  - Rajić, Nevenka
AU  - Mrak, Maja
AU  - Kaučič, Venčeslav
PY  - 2007
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1110
AB  - The thermal degradation of cetyltrimethylammonium bromide (CTMAB) inside the mesoporous SBA-3 was studied under non-isothermal conditions. There are two distinct and complex kinetic processes which partly overlap, each consisting of one dominant and three minor individual processes. The two dominant processes can be described by the Sestak-Berggren model. The main decomposition step (the first dominant process) involves the overcoming of weak interactions between CTMAB and the silica network and proceeds with a lower Ea value (116±2 kJ mol-1) than the second dominant process (153±5 kJ mol-1), which can be explained by the size reduction of the pore openings due to the contraction of the SBA-3 unit cell caused by the removal of CTMAB.
AB  - Izučavano je termičko razlaganje pod neizotermskim uslovima cetiltrimetilamonijum-bromida (CTMAB) unutar mezoporoznog SBA-3. Postoje dva razgovetna i složena kinetička procesa koji se delimično preklapaju, pri čemu se oba sastoje od po jednog preovlađujućeg i tri sporedna individualna procesa. Dva preovlađujuća procesa mogu se opisati pomoću Šestak-Bergrenovog modela. U glavnom stupnju razlaganja (u prvom preovlađujućem procesu) bivaju nadvladane slabe interakcije između CTMAB i rešetke silicijum-dioksida, i taj stupanj se odvija uz manju vrednost Ea (116±2 kJ mol-1). Drugom preovlađujućem procesu odgovara veća vrednost Ea (153±5 kJ mol-1) nego prvom procesu, što se može objasniti smanjenjem veličine otvora pora usled kontrakcije jedinične ćelije SBA-3 izazvane uklanjanjem cetiltrimetilamonijum-bromida.
PB  - Serbian Chemical Society, Belgrade
T2  - Journal of the Serbian Chemical Society
T1  - A kinetic study of the thermal degradation of cetyltrimethylammonium bromide inside the mesoporous SBA-3 molecular sieve
T1  - Kinetičko izučavanje termičkog razlaganja cetiltrimetilamonijum−bromida unutar mezoporoznog molekulskog sita SBA-3
EP  - 1319
IS  - 12
SP  - 1309
VL  - 72
UR  - https://hdl.handle.net/21.15107/rcub_technorep_1110
ER  - 

@article{
author = "Stojaković, Đorđe and Rajić, Nevenka and Mrak, Maja and Kaučič, Venčeslav",
year = "2007",
abstract = "The thermal degradation of cetyltrimethylammonium bromide (CTMAB) inside the mesoporous SBA-3 was studied under non-isothermal conditions. There are two distinct and complex kinetic processes which partly overlap, each consisting of one dominant and three minor individual processes. The two dominant processes can be described by the Sestak-Berggren model. The main decomposition step (the first dominant process) involves the overcoming of weak interactions between CTMAB and the silica network and proceeds with a lower Ea value (116±2 kJ mol-1) than the second dominant process (153±5 kJ mol-1), which can be explained by the size reduction of the pore openings due to the contraction of the SBA-3 unit cell caused by the removal of CTMAB., Izučavano je termičko razlaganje pod neizotermskim uslovima cetiltrimetilamonijum-bromida (CTMAB) unutar mezoporoznog SBA-3. Postoje dva razgovetna i složena kinetička procesa koji se delimično preklapaju, pri čemu se oba sastoje od po jednog preovlađujućeg i tri sporedna individualna procesa. Dva preovlađujuća procesa mogu se opisati pomoću Šestak-Bergrenovog modela. U glavnom stupnju razlaganja (u prvom preovlađujućem procesu) bivaju nadvladane slabe interakcije između CTMAB i rešetke silicijum-dioksida, i taj stupanj se odvija uz manju vrednost Ea (116±2 kJ mol-1). Drugom preovlađujućem procesu odgovara veća vrednost Ea (153±5 kJ mol-1) nego prvom procesu, što se može objasniti smanjenjem veličine otvora pora usled kontrakcije jedinične ćelije SBA-3 izazvane uklanjanjem cetiltrimetilamonijum-bromida.",
publisher = "Serbian Chemical Society, Belgrade",
journal = "Journal of the Serbian Chemical Society",
title = "A kinetic study of the thermal degradation of cetyltrimethylammonium bromide inside the mesoporous SBA-3 molecular sieve, Kinetičko izučavanje termičkog razlaganja cetiltrimetilamonijum−bromida unutar mezoporoznog molekulskog sita SBA-3",
pages = "1319-1309",
number = "12",
volume = "72",
url = "https://hdl.handle.net/21.15107/rcub_technorep_1110"
}

Stojaković, Đ., Rajić, N., Mrak, M.,& Kaučič, V.. (2007). A kinetic study of the thermal degradation of cetyltrimethylammonium bromide inside the mesoporous SBA-3 molecular sieve. in Journal of the Serbian Chemical Society
Serbian Chemical Society, Belgrade., 72(12), 1309-1319.
https://hdl.handle.net/21.15107/rcub_technorep_1110

Stojaković Đ, Rajić N, Mrak M, Kaučič V. A kinetic study of the thermal degradation of cetyltrimethylammonium bromide inside the mesoporous SBA-3 molecular sieve. in Journal of the Serbian Chemical Society. 2007;72(12):1309-1319.
https://hdl.handle.net/21.15107/rcub_technorep_1110 .

Stojaković, Đorđe, Rajić, Nevenka, Mrak, Maja, Kaučič, Venčeslav, "A kinetic study of the thermal degradation of cetyltrimethylammonium bromide inside the mesoporous SBA-3 molecular sieve" in Journal of the Serbian Chemical Society, 72, no. 12 (2007):1309-1319,
https://hdl.handle.net/21.15107/rcub_technorep_1110 .

TY  - JOUR
AU  - Stojaković, D.
AU  - Rajić, Nevenka
AU  - Sajić, Sanja
AU  - Zabukovec-Logar, Nataša
AU  - Kaučič, Venčeslav
PY  - 2007
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1115
AB  - Kinetics of the thermal decomposition of 3-methylaminopropylamine which was used as a structure-directing agent in the synthesis of AlPO4-21 has been studied under isothermal and non-isothermal conditions. The decomposition is a single-step reaction occurring in the 573-663 K range. It is a phase-boundary-controlled process, described by the 'F2/3, R3' kinetic model. The activation energy values obtained under the non-isothermal and isothermal conditions lie in the 173-151 kJ mol(-1) range.
PB  - Springer, Dordrecht
T2  - Journal of Thermal Analysis and Calorimetry
T1  - A kinetic study of the thermal degradation of 3-methylaminopropylamine inside AlPO4-21
EP  - 341
IS  - 2
SP  - 337
VL  - 87
DO  - 10.1007/s10973-005-7382-4
ER  - 

@article{
author = "Stojaković, D. and Rajić, Nevenka and Sajić, Sanja and Zabukovec-Logar, Nataša and Kaučič, Venčeslav",
year = "2007",
abstract = "Kinetics of the thermal decomposition of 3-methylaminopropylamine which was used as a structure-directing agent in the synthesis of AlPO4-21 has been studied under isothermal and non-isothermal conditions. The decomposition is a single-step reaction occurring in the 573-663 K range. It is a phase-boundary-controlled process, described by the 'F2/3, R3' kinetic model. The activation energy values obtained under the non-isothermal and isothermal conditions lie in the 173-151 kJ mol(-1) range.",
publisher = "Springer, Dordrecht",
journal = "Journal of Thermal Analysis and Calorimetry",
title = "A kinetic study of the thermal degradation of 3-methylaminopropylamine inside AlPO4-21",
pages = "341-337",
number = "2",
volume = "87",
doi = "10.1007/s10973-005-7382-4"
}

Stojaković, D., Rajić, N., Sajić, S., Zabukovec-Logar, N.,& Kaučič, V.. (2007). A kinetic study of the thermal degradation of 3-methylaminopropylamine inside AlPO4-21. in Journal of Thermal Analysis and Calorimetry
Springer, Dordrecht., 87(2), 337-341.
https://doi.org/10.1007/s10973-005-7382-4

Stojaković D, Rajić N, Sajić S, Zabukovec-Logar N, Kaučič V. A kinetic study of the thermal degradation of 3-methylaminopropylamine inside AlPO4-21. in Journal of Thermal Analysis and Calorimetry. 2007;87(2):337-341.
doi:10.1007/s10973-005-7382-4 .

Stojaković, D., Rajić, Nevenka, Sajić, Sanja, Zabukovec-Logar, Nataša, Kaučič, Venčeslav, "A kinetic study of the thermal degradation of 3-methylaminopropylamine inside AlPO4-21" in Journal of Thermal Analysis and Calorimetry, 87, no. 2 (2007):337-341,
https://doi.org/10.1007/s10973-005-7382-4 . .

TY  - JOUR
AU  - Stojaković, Đorđe
AU  - Rajić, Nevenka
AU  - Zabukovec-Logar, Nataša
AU  - Kaučič, Venčeslav
PY  - 2006
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/910
AB  - Ammonium ions remain inside the 3D zincophosphate framework after the hydrothermal crystallization. These species in co-operation with sodium cations exert a specific templating role in the formation of the open-framework lattice. The decomposition of the ammonium species under non-isothermal conditions has been studied by the non-parametric kinetics (NPK) method. The process is characterized by a complex kinetic mechanism and a relatively high activation energy for the main reaction step, E-a = 336 kJ/mol. These reflect the fact that the decomposition of the ammonium ions inside the zincophosphate framework involves not only the diffusion of the liberated species through the narrow channels of the microporous framework but also a prior overcoming of strong electrostatic interactions and the breaking of hydrogen bonds.
PB  - Elsevier Science Bv, Amsterdam
T2  - Thermochimica Acta
T1  - A kinetic study of the thermal degradation of ammonium species inside a 3D zincophosphate
EP  - 46
IS  - 1-2
SP  - 42
VL  - 449
DO  - 10.1016/j.tca.2006.07.013
ER  - 

@article{
author = "Stojaković, Đorđe and Rajić, Nevenka and Zabukovec-Logar, Nataša and Kaučič, Venčeslav",
year = "2006",
abstract = "Ammonium ions remain inside the 3D zincophosphate framework after the hydrothermal crystallization. These species in co-operation with sodium cations exert a specific templating role in the formation of the open-framework lattice. The decomposition of the ammonium species under non-isothermal conditions has been studied by the non-parametric kinetics (NPK) method. The process is characterized by a complex kinetic mechanism and a relatively high activation energy for the main reaction step, E-a = 336 kJ/mol. These reflect the fact that the decomposition of the ammonium ions inside the zincophosphate framework involves not only the diffusion of the liberated species through the narrow channels of the microporous framework but also a prior overcoming of strong electrostatic interactions and the breaking of hydrogen bonds.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Thermochimica Acta",
title = "A kinetic study of the thermal degradation of ammonium species inside a 3D zincophosphate",
pages = "46-42",
number = "1-2",
volume = "449",
doi = "10.1016/j.tca.2006.07.013"
}

Stojaković, Đ., Rajić, N., Zabukovec-Logar, N.,& Kaučič, V.. (2006). A kinetic study of the thermal degradation of ammonium species inside a 3D zincophosphate. in Thermochimica Acta
Elsevier Science Bv, Amsterdam., 449(1-2), 42-46.
https://doi.org/10.1016/j.tca.2006.07.013

Stojaković Đ, Rajić N, Zabukovec-Logar N, Kaučič V. A kinetic study of the thermal degradation of ammonium species inside a 3D zincophosphate. in Thermochimica Acta. 2006;449(1-2):42-46.
doi:10.1016/j.tca.2006.07.013 .

Stojaković, Đorđe, Rajić, Nevenka, Zabukovec-Logar, Nataša, Kaučič, Venčeslav, "A kinetic study of the thermal degradation of ammonium species inside a 3D zincophosphate" in Thermochimica Acta, 449, no. 1-2 (2006):42-46,
https://doi.org/10.1016/j.tca.2006.07.013 . .

TY  - JOUR
AU  - Rajić, Nevenka
AU  - Zabukovec-Logar, Nataša
AU  - Mali, Gregor
AU  - Stojaković, Đorđe
AU  - Kaučič, Venčeslav
PY  - 2006
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/859
AB  - Three dicarboxylic acids (oxalic, malonic and terephthalic) were investigated as possible pillars in the formation of metallophosphates with extended structures in the presence of 1,2-diaminopropane (DAP) as a structure-directing agent. Only the oxalate ion was proven to be a suitable building block in the formation of hybrid networks. The terephthalate ion seems to possess the ability to be structurally involved in lattice formation, although not in networks of the hybrid type. The malonate ion in this system showed no propensity towards lattice formation, i.e., malonic acid merely exits as an intercalated species inside the 2-D zincophosphate structure. Different pillar-functioning ability has been attributed to structural differences of the three dicarboxylate ions.
PB  - Croatian Chemical Society
T2  - Croatica Chemica Acta
T1  - On a possible role of dicarboxylate ions in the formation of open-framework metallophosphates
EP  - 193
IS  - 2
SP  - 187
VL  - 79
UR  - https://hdl.handle.net/21.15107/rcub_technorep_859
ER  - 

@article{
author = "Rajić, Nevenka and Zabukovec-Logar, Nataša and Mali, Gregor and Stojaković, Đorđe and Kaučič, Venčeslav",
year = "2006",
abstract = "Three dicarboxylic acids (oxalic, malonic and terephthalic) were investigated as possible pillars in the formation of metallophosphates with extended structures in the presence of 1,2-diaminopropane (DAP) as a structure-directing agent. Only the oxalate ion was proven to be a suitable building block in the formation of hybrid networks. The terephthalate ion seems to possess the ability to be structurally involved in lattice formation, although not in networks of the hybrid type. The malonate ion in this system showed no propensity towards lattice formation, i.e., malonic acid merely exits as an intercalated species inside the 2-D zincophosphate structure. Different pillar-functioning ability has been attributed to structural differences of the three dicarboxylate ions.",
publisher = "Croatian Chemical Society",
journal = "Croatica Chemica Acta",
title = "On a possible role of dicarboxylate ions in the formation of open-framework metallophosphates",
pages = "193-187",
number = "2",
volume = "79",
url = "https://hdl.handle.net/21.15107/rcub_technorep_859"
}

Rajić, N., Zabukovec-Logar, N., Mali, G., Stojaković, Đ.,& Kaučič, V.. (2006). On a possible role of dicarboxylate ions in the formation of open-framework metallophosphates. in Croatica Chemica Acta
Croatian Chemical Society., 79(2), 187-193.
https://hdl.handle.net/21.15107/rcub_technorep_859

Rajić N, Zabukovec-Logar N, Mali G, Stojaković Đ, Kaučič V. On a possible role of dicarboxylate ions in the formation of open-framework metallophosphates. in Croatica Chemica Acta. 2006;79(2):187-193.
https://hdl.handle.net/21.15107/rcub_technorep_859 .

Rajić, Nevenka, Zabukovec-Logar, Nataša, Mali, Gregor, Stojaković, Đorđe, Kaučič, Venčeslav, "On a possible role of dicarboxylate ions in the formation of open-framework metallophosphates" in Croatica Chemica Acta, 79, no. 2 (2006):187-193,
https://hdl.handle.net/21.15107/rcub_technorep_859 .

TY  - JOUR
AU  - Rajić, Nevenka
AU  - Stojaković, D.
AU  - Zabukovec-Logar, Nataša
AU  - Kaučič, Venčeslav
PY  - 2006
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/931
AB  - A 3-D open-framework and a chain-structured zinc terephthalate are obtained by hydrothermal crystallization under microwave heating at 180 degrees C. The study shows that these structures have rather similar principal building units, which facilitates the structure transformation from the low-dimensional to the open-framework one during crystallization. The transformation involves the formation of new coordinative bonds between a Zn atom in a chain and two terephthalate groups from two different chains: one from the same stack and the other from the neighboring stack. Also, one water molecule coordinated to the Zn atom in the chain-like structure is lost and the zinc atom expands its coordination number to five. A considerable shift of the chains as well as bond twisting in them are necessary to occur prior to the formation of the network.
PB  - Springer, Dordrecht
T2  - Journal of Porous Materials
T1  - An evidence for a chain to network transformation during the microwave hydrothermal crystallization of an open-framework zinc terephthalate
EP  - 156
IS  - 2
SP  - 153
VL  - 13
DO  - 10.1007/s10934-006-7022-9
ER  - 

@article{
author = "Rajić, Nevenka and Stojaković, D. and Zabukovec-Logar, Nataša and Kaučič, Venčeslav",
year = "2006",
abstract = "A 3-D open-framework and a chain-structured zinc terephthalate are obtained by hydrothermal crystallization under microwave heating at 180 degrees C. The study shows that these structures have rather similar principal building units, which facilitates the structure transformation from the low-dimensional to the open-framework one during crystallization. The transformation involves the formation of new coordinative bonds between a Zn atom in a chain and two terephthalate groups from two different chains: one from the same stack and the other from the neighboring stack. Also, one water molecule coordinated to the Zn atom in the chain-like structure is lost and the zinc atom expands its coordination number to five. A considerable shift of the chains as well as bond twisting in them are necessary to occur prior to the formation of the network.",
publisher = "Springer, Dordrecht",
journal = "Journal of Porous Materials",
title = "An evidence for a chain to network transformation during the microwave hydrothermal crystallization of an open-framework zinc terephthalate",
pages = "156-153",
number = "2",
volume = "13",
doi = "10.1007/s10934-006-7022-9"
}

Rajić, N., Stojaković, D., Zabukovec-Logar, N.,& Kaučič, V.. (2006). An evidence for a chain to network transformation during the microwave hydrothermal crystallization of an open-framework zinc terephthalate. in Journal of Porous Materials
Springer, Dordrecht., 13(2), 153-156.
https://doi.org/10.1007/s10934-006-7022-9

Rajić N, Stojaković D, Zabukovec-Logar N, Kaučič V. An evidence for a chain to network transformation during the microwave hydrothermal crystallization of an open-framework zinc terephthalate. in Journal of Porous Materials. 2006;13(2):153-156.
doi:10.1007/s10934-006-7022-9 .

Rajić, Nevenka, Stojaković, D., Zabukovec-Logar, Nataša, Kaučič, Venčeslav, "An evidence for a chain to network transformation during the microwave hydrothermal crystallization of an open-framework zinc terephthalate" in Journal of Porous Materials, 13, no. 2 (2006):153-156,
https://doi.org/10.1007/s10934-006-7022-9 . .

TY  - JOUR
AU  - Zabukovec-Logar, Nataša
AU  - Rajić, Nevenka
AU  - Stojaković, D.
AU  - Golobić, Amalija
AU  - Kaučič, Venčeslav
PY  - 2005
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/726
AB  - A new 2D zinc phosphate [H3NCH(CH3)CH 2NH3]2+0.75[COOH(CH 2)COOH]0.25 (Zn3P3O 11OH)2-* 0.5NH4+ consists of zinc phosphate layers, which are intercalated by diprotonated 1,2-diaminopropane, malonic acid, and NH4+ ions. The inorganic layers are composed of alternating ZnO4 and PO4 (PO3OH) tetrahedra that form 8-membered ring apertures. The intercalated species strongly interact with the zinc phosphate layers through hydrogen bonds, which is a key factor in stabilizing the structure. Crystal data: monoclinic, P21/a, a = 8.3457(1) Å, b = 16.8953(3) Å, c = 10.1817(2) Å, β = 95.3121(8)°, Z = 4, R = 0.0423.
T2  - Pure and Applied Chemistry
T1  - Synthesis and single-crystal structure analysis of a new layered zinc phosphate
EP  - 1717
IS  - 10
SP  - 1707
VL  - 77
DO  - 10.1351/pac200577101707
ER  - 

@article{
author = "Zabukovec-Logar, Nataša and Rajić, Nevenka and Stojaković, D. and Golobić, Amalija and Kaučič, Venčeslav",
year = "2005",
abstract = "A new 2D zinc phosphate [H3NCH(CH3)CH 2NH3]2+0.75[COOH(CH 2)COOH]0.25 (Zn3P3O 11OH)2-* 0.5NH4+ consists of zinc phosphate layers, which are intercalated by diprotonated 1,2-diaminopropane, malonic acid, and NH4+ ions. The inorganic layers are composed of alternating ZnO4 and PO4 (PO3OH) tetrahedra that form 8-membered ring apertures. The intercalated species strongly interact with the zinc phosphate layers through hydrogen bonds, which is a key factor in stabilizing the structure. Crystal data: monoclinic, P21/a, a = 8.3457(1) Å, b = 16.8953(3) Å, c = 10.1817(2) Å, β = 95.3121(8)°, Z = 4, R = 0.0423.",
journal = "Pure and Applied Chemistry",
title = "Synthesis and single-crystal structure analysis of a new layered zinc phosphate",
pages = "1717-1707",
number = "10",
volume = "77",
doi = "10.1351/pac200577101707"
}

Zabukovec-Logar, N., Rajić, N., Stojaković, D., Golobić, A.,& Kaučič, V.. (2005). Synthesis and single-crystal structure analysis of a new layered zinc phosphate. in Pure and Applied Chemistry, 77(10), 1707-1717.
https://doi.org/10.1351/pac200577101707

Zabukovec-Logar N, Rajić N, Stojaković D, Golobić A, Kaučič V. Synthesis and single-crystal structure analysis of a new layered zinc phosphate. in Pure and Applied Chemistry. 2005;77(10):1707-1717.
doi:10.1351/pac200577101707 .

Zabukovec-Logar, Nataša, Rajić, Nevenka, Stojaković, D., Golobić, Amalija, Kaučič, Venčeslav, "Synthesis and single-crystal structure analysis of a new layered zinc phosphate" in Pure and Applied Chemistry, 77, no. 10 (2005):1707-1717,
https://doi.org/10.1351/pac200577101707 . .

TY  - JOUR
AU  - Rajić, Nevenka
AU  - Zabukovec-Logar, Nataša
AU  - Stojaković, Đorđe R.
AU  - Sajić, Sanja
AU  - Golobič, Amalija
AU  - Kaučič, Venčeslav
PY  - 2005
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/777
AB  - A novel layered zincophosphate (ZnPO–MPA) was prepared by hydrothermal crystallization using 3-methylaminopropylamine (MPA) as a structure-directing agent. The structure consists of macroanion [Zn2P3O8(OH)3]2- layers which are built up of 4-membered ring channels. The channels (of about 3.7 Å diameter) arise through the connection of the neighbouring rings by two oxygen bridges. The negative charge of the layers is compensated by diprotonated MPA molecules which are stacked parallel to the ring channels. ZnPO–MPA is stable up to 300 °C. At higher temperatures MPA decomposition begins followed by a dehydration, which occurs through condensation of the framework hydroxyl groups. The activation energy of the MPA decomposition is high due to the fact that the layers and MPA cations are held together by strong hydrogen bonds.
AB  - Jedan novi slojeviti cinkofosfat (ZnPO–MPA) dobijen je hidrotermalnom kristalizacijom korišćenjem 3-metilaminopropilamina (MPA) kao agensa za usmeravanje strukture. Struktura se sastoji od makroanjonskih slojeva [Zn2P3O8(OH)3]2- koji su izgrađeni od kanala u vidu četvoročlanog prstena. Kanali (prečnika oko 3,7 Å) nastaju povezivanjem susednih prstenova preko kiseoničnih mostova. Negativno naelektrisanje slojeva kompenzovano je dvoprotonovanim MPA koji su naslagani paralelno prstenastim kanalima. ZnPO–MPA je stabilan do 300 °C. Na višim temperaturama počinje razlaganje MPA koje je praćeno dehidratacijom, a ova se dešava putem kondenzacije hidroksilnih grupa rešetke. Energija aktivacije razlaganja MPA je velika zbog toga što se slojevi i katjoni MPA uzajamno drže jakim vodoničnim vezama.
PB  - Serbian Chemical Society, Belgrade
T2  - Journal of the Serbian Chemical Society
T1  - Hydrothermal synthesis and structure of a new layered zincophosphate intercalated with 3-methylaminopropylamine cations
T1  - Hidrotermalna sinteza i struktura jednog novog slojevitog cinkofosfata interkaliranog sa 3-metilaminopropilamin-katjonom
EP  - 634
IS  - 4
SP  - 625
VL  - 70
UR  - https://hdl.handle.net/21.15107/rcub_technorep_777
ER  - 

@article{
author = "Rajić, Nevenka and Zabukovec-Logar, Nataša and Stojaković, Đorđe R. and Sajić, Sanja and Golobič, Amalija and Kaučič, Venčeslav",
year = "2005",
abstract = "A novel layered zincophosphate (ZnPO–MPA) was prepared by hydrothermal crystallization using 3-methylaminopropylamine (MPA) as a structure-directing agent. The structure consists of macroanion [Zn2P3O8(OH)3]2- layers which are built up of 4-membered ring channels. The channels (of about 3.7 Å diameter) arise through the connection of the neighbouring rings by two oxygen bridges. The negative charge of the layers is compensated by diprotonated MPA molecules which are stacked parallel to the ring channels. ZnPO–MPA is stable up to 300 °C. At higher temperatures MPA decomposition begins followed by a dehydration, which occurs through condensation of the framework hydroxyl groups. The activation energy of the MPA decomposition is high due to the fact that the layers and MPA cations are held together by strong hydrogen bonds., Jedan novi slojeviti cinkofosfat (ZnPO–MPA) dobijen je hidrotermalnom kristalizacijom korišćenjem 3-metilaminopropilamina (MPA) kao agensa za usmeravanje strukture. Struktura se sastoji od makroanjonskih slojeva [Zn2P3O8(OH)3]2- koji su izgrađeni od kanala u vidu četvoročlanog prstena. Kanali (prečnika oko 3,7 Å) nastaju povezivanjem susednih prstenova preko kiseoničnih mostova. Negativno naelektrisanje slojeva kompenzovano je dvoprotonovanim MPA koji su naslagani paralelno prstenastim kanalima. ZnPO–MPA je stabilan do 300 °C. Na višim temperaturama počinje razlaganje MPA koje je praćeno dehidratacijom, a ova se dešava putem kondenzacije hidroksilnih grupa rešetke. Energija aktivacije razlaganja MPA je velika zbog toga što se slojevi i katjoni MPA uzajamno drže jakim vodoničnim vezama.",
publisher = "Serbian Chemical Society, Belgrade",
journal = "Journal of the Serbian Chemical Society",
title = "Hydrothermal synthesis and structure of a new layered zincophosphate intercalated with 3-methylaminopropylamine cations, Hidrotermalna sinteza i struktura jednog novog slojevitog cinkofosfata interkaliranog sa 3-metilaminopropilamin-katjonom",
pages = "634-625",
number = "4",
volume = "70",
url = "https://hdl.handle.net/21.15107/rcub_technorep_777"
}

Rajić, N., Zabukovec-Logar, N., Stojaković, Đ. R., Sajić, S., Golobič, A.,& Kaučič, V.. (2005). Hydrothermal synthesis and structure of a new layered zincophosphate intercalated with 3-methylaminopropylamine cations. in Journal of the Serbian Chemical Society
Serbian Chemical Society, Belgrade., 70(4), 625-634.
https://hdl.handle.net/21.15107/rcub_technorep_777

Rajić N, Zabukovec-Logar N, Stojaković ĐR, Sajić S, Golobič A, Kaučič V. Hydrothermal synthesis and structure of a new layered zincophosphate intercalated with 3-methylaminopropylamine cations. in Journal of the Serbian Chemical Society. 2005;70(4):625-634.
https://hdl.handle.net/21.15107/rcub_technorep_777 .

Rajić, Nevenka, Zabukovec-Logar, Nataša, Stojaković, Đorđe R., Sajić, Sanja, Golobič, Amalija, Kaučič, Venčeslav, "Hydrothermal synthesis and structure of a new layered zincophosphate intercalated with 3-methylaminopropylamine cations" in Journal of the Serbian Chemical Society, 70, no. 4 (2005):625-634,
https://hdl.handle.net/21.15107/rcub_technorep_777 .

TY  - JOUR
AU  - Zabukovec-Logar, Nataša
AU  - Rajić, Nevenka
AU  - Stojaković, D.
AU  - Sajić, Sanja
AU  - Golobić, Amalija
AU  - Kaučič, Venčeslav
PY  - 2005
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/784
AB  - The title compound, catena-poly[[N-methylpropane-1,3diaminium [mu-phosphato-(mu-hydrogen phosphato)(mu-dihydrogen phosphato) dizincate(II)]], {(C4H14N2)[Zn-2(PO4)(HPO4)(H2PO4)]}(n), consists of macroanionic [Zn-2(PO4)(HPO4)(H2PO4)](2-) layers and intercalated (C4H12N2)(2+) cations. The layers are built up from ZnO4 and PO4/HPO4/H2PO4 tetrahedra that result in small channels of approximate diameter 3.7 angstrom within the layers. Framework-to-framework O - H center dot center dot center dot O and template-to-framework N - H center dot center dot center dot O hydrogen bonds are important in stabilizing the structure.
PB  - Int Union Crystallography, Chester
T2  - Acta Crystallographica Section E-Crystallographic Communications
T1  - (C4H12N2)[Zn-2(PO4)(HPO4)(H2PO4)], a layered zinc phosphate with intercalated N-methylpropane-1,3-diaminium cations
EP  - M1356
SP  - M1354
VL  - 61
DO  - 10.1107/S1600536805018908
ER  - 

@article{
author = "Zabukovec-Logar, Nataša and Rajić, Nevenka and Stojaković, D. and Sajić, Sanja and Golobić, Amalija and Kaučič, Venčeslav",
year = "2005",
abstract = "The title compound, catena-poly[[N-methylpropane-1,3diaminium [mu-phosphato-(mu-hydrogen phosphato)(mu-dihydrogen phosphato) dizincate(II)]], {(C4H14N2)[Zn-2(PO4)(HPO4)(H2PO4)]}(n), consists of macroanionic [Zn-2(PO4)(HPO4)(H2PO4)](2-) layers and intercalated (C4H12N2)(2+) cations. The layers are built up from ZnO4 and PO4/HPO4/H2PO4 tetrahedra that result in small channels of approximate diameter 3.7 angstrom within the layers. Framework-to-framework O - H center dot center dot center dot O and template-to-framework N - H center dot center dot center dot O hydrogen bonds are important in stabilizing the structure.",
publisher = "Int Union Crystallography, Chester",
journal = "Acta Crystallographica Section E-Crystallographic Communications",
title = "(C4H12N2)[Zn-2(PO4)(HPO4)(H2PO4)], a layered zinc phosphate with intercalated N-methylpropane-1,3-diaminium cations",
pages = "M1356-M1354",
volume = "61",
doi = "10.1107/S1600536805018908"
}

Zabukovec-Logar, N., Rajić, N., Stojaković, D., Sajić, S., Golobić, A.,& Kaučič, V.. (2005). (C4H12N2)[Zn-2(PO4)(HPO4)(H2PO4)], a layered zinc phosphate with intercalated N-methylpropane-1,3-diaminium cations. in Acta Crystallographica Section E-Crystallographic Communications
Int Union Crystallography, Chester., 61, M1354-M1356.
https://doi.org/10.1107/S1600536805018908

Zabukovec-Logar N, Rajić N, Stojaković D, Sajić S, Golobić A, Kaučič V. (C4H12N2)[Zn-2(PO4)(HPO4)(H2PO4)], a layered zinc phosphate with intercalated N-methylpropane-1,3-diaminium cations. in Acta Crystallographica Section E-Crystallographic Communications. 2005;61:M1354-M1356.
doi:10.1107/S1600536805018908 .

Zabukovec-Logar, Nataša, Rajić, Nevenka, Stojaković, D., Sajić, Sanja, Golobić, Amalija, Kaučič, Venčeslav, "(C4H12N2)[Zn-2(PO4)(HPO4)(H2PO4)], a layered zinc phosphate with intercalated N-methylpropane-1,3-diaminium cations" in Acta Crystallographica Section E-Crystallographic Communications, 61 (2005):M1354-M1356,
https://doi.org/10.1107/S1600536805018908 . .

TY  - JOUR
AU  - Rajić, Nevenka
AU  - Stojaković, D.
AU  - Hanžel, Darko
AU  - Kaučič, Venčeslav
PY  - 2004
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/680
AB  - 13-Diaminopropane (DAP) was used as a structure-directing agent for the hydrothermal synthesis of an organically templated iron phosphate. During crystallization at 180 degreesC, iron phosphate (FePO-DAP) with a layered structure was formed after one day. Longer crystallization yielded a mixture of FePO-DAP and leucophosphite, raising the question whether a transformation of FePO-DAP to leucophosphite occurs. or wheter DAP decomposes under hydrothermal conditions resulting in leucophosphite formation. Lattice energy, and free energy calculations strongly support the supposition that a decomposition of DAP occurs prior to the formation of leueophosphite.
PB  - Srpsko hemijsko društvo, Beograd
T2  - Journal of the Serbian Chemical Society
T1  - The structure directing role of 1,3-diaminopropane in the hydrothermal synthesis of iron(III) phosphate
EP  - 185
IS  - 3
SP  - 179
VL  - 69
DO  - 10.2298/JSC0403179R
ER  - 

@article{
author = "Rajić, Nevenka and Stojaković, D. and Hanžel, Darko and Kaučič, Venčeslav",
year = "2004",
abstract = "13-Diaminopropane (DAP) was used as a structure-directing agent for the hydrothermal synthesis of an organically templated iron phosphate. During crystallization at 180 degreesC, iron phosphate (FePO-DAP) with a layered structure was formed after one day. Longer crystallization yielded a mixture of FePO-DAP and leucophosphite, raising the question whether a transformation of FePO-DAP to leucophosphite occurs. or wheter DAP decomposes under hydrothermal conditions resulting in leucophosphite formation. Lattice energy, and free energy calculations strongly support the supposition that a decomposition of DAP occurs prior to the formation of leueophosphite.",
publisher = "Srpsko hemijsko društvo, Beograd",
journal = "Journal of the Serbian Chemical Society",
title = "The structure directing role of 1,3-diaminopropane in the hydrothermal synthesis of iron(III) phosphate",
pages = "185-179",
number = "3",
volume = "69",
doi = "10.2298/JSC0403179R"
}

Rajić, N., Stojaković, D., Hanžel, D.,& Kaučič, V.. (2004). The structure directing role of 1,3-diaminopropane in the hydrothermal synthesis of iron(III) phosphate. in Journal of the Serbian Chemical Society
Srpsko hemijsko društvo, Beograd., 69(3), 179-185.
https://doi.org/10.2298/JSC0403179R

Rajić N, Stojaković D, Hanžel D, Kaučič V. The structure directing role of 1,3-diaminopropane in the hydrothermal synthesis of iron(III) phosphate. in Journal of the Serbian Chemical Society. 2004;69(3):179-185.
doi:10.2298/JSC0403179R .

Rajić, Nevenka, Stojaković, D., Hanžel, Darko, Kaučič, Venčeslav, "The structure directing role of 1,3-diaminopropane in the hydrothermal synthesis of iron(III) phosphate" in Journal of the Serbian Chemical Society, 69, no. 3 (2004):179-185,
https://doi.org/10.2298/JSC0403179R . .

TY  - JOUR
AU  - Rajić, Nevenka
AU  - Zabukovec-Logar, Nataša
AU  - Mali, Gregor
AU  - Kaučič, Venčeslav
PY  - 2003
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/563
AB  - A new 3-D alumino(oxalato)phosphate, [H3NCH(CH3)CH2NH3](2)[Al4P6O20(OH)(4)(C2O4)(H2O)], consists of aluminophosphate layers which are pillared by oxalate anions. It contains a hybrid 12-membered channel where guest species, diprotonated 1,2-diaminopropane and water molecules, are found. The layers are composed of AlO6, AlO4, and PO4 polyhedra giving double chains, which are interconnected through Al-O-P-O-Al bridges. Oxalate ions are quadridentately bonded by participating in the coordination of AlO6 and by bridging the aluminophosphate layers. The guest species strongly interact with the alumino(oxalato)phosphate layers which is evidenced by solid-state NMR spectroscopy. Crystal data are: triclinic, space group P (1) over bar, a = 8.611(1) Angstrom, b = 9.096(1) Angstrom, c = 11.371(1) Angstrom, alpha = 104.811(1)degrees, beta = 111.368(1)degrees, and gamma = 94.248(1)degrees, V = 787.9(1) Angstrom(3), and R = 0.041.
PB  - Amer Chemical Soc, Washington
T2  - Chemistry of Materials
T1  - New inorganic-organic hybrid: Synthesis and structural characterization of an alumino(oxalato)phosphate
EP  - 1738
IS  - 8
SP  - 1734
VL  - 15
DO  - 10.1021/cm021343u
ER  - 

@article{
author = "Rajić, Nevenka and Zabukovec-Logar, Nataša and Mali, Gregor and Kaučič, Venčeslav",
year = "2003",
abstract = "A new 3-D alumino(oxalato)phosphate, [H3NCH(CH3)CH2NH3](2)[Al4P6O20(OH)(4)(C2O4)(H2O)], consists of aluminophosphate layers which are pillared by oxalate anions. It contains a hybrid 12-membered channel where guest species, diprotonated 1,2-diaminopropane and water molecules, are found. The layers are composed of AlO6, AlO4, and PO4 polyhedra giving double chains, which are interconnected through Al-O-P-O-Al bridges. Oxalate ions are quadridentately bonded by participating in the coordination of AlO6 and by bridging the aluminophosphate layers. The guest species strongly interact with the alumino(oxalato)phosphate layers which is evidenced by solid-state NMR spectroscopy. Crystal data are: triclinic, space group P (1) over bar, a = 8.611(1) Angstrom, b = 9.096(1) Angstrom, c = 11.371(1) Angstrom, alpha = 104.811(1)degrees, beta = 111.368(1)degrees, and gamma = 94.248(1)degrees, V = 787.9(1) Angstrom(3), and R = 0.041.",
publisher = "Amer Chemical Soc, Washington",
journal = "Chemistry of Materials",
title = "New inorganic-organic hybrid: Synthesis and structural characterization of an alumino(oxalato)phosphate",
pages = "1738-1734",
number = "8",
volume = "15",
doi = "10.1021/cm021343u"
}

Rajić, N., Zabukovec-Logar, N., Mali, G.,& Kaučič, V.. (2003). New inorganic-organic hybrid: Synthesis and structural characterization of an alumino(oxalato)phosphate. in Chemistry of Materials
Amer Chemical Soc, Washington., 15(8), 1734-1738.
https://doi.org/10.1021/cm021343u

Rajić N, Zabukovec-Logar N, Mali G, Kaučič V. New inorganic-organic hybrid: Synthesis and structural characterization of an alumino(oxalato)phosphate. in Chemistry of Materials. 2003;15(8):1734-1738.
doi:10.1021/cm021343u .

Rajić, Nevenka, Zabukovec-Logar, Nataša, Mali, Gregor, Kaučič, Venčeslav, "New inorganic-organic hybrid: Synthesis and structural characterization of an alumino(oxalato)phosphate" in Chemistry of Materials, 15, no. 8 (2003):1734-1738,
https://doi.org/10.1021/cm021343u . .

TY  - JOUR
AU  - Tusar, NN
AU  - Zabukovec-Logar, Nataša
AU  - Arcon, Iztok
AU  - Thibault-Starzyk, Frederic
AU  - Ristić, A
AU  - Rajić, Nevenka
AU  - Kaučič, Venčeslav
PY  - 2003
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/513
AB  - Manganese-containing silicalite-1 (MnS-1) was synthesized hydrothermally in the presence of the structure-directing agent (template) tetraethylammonium hydroxide (TEAOH) for the first time. The highly crystalline MnS-1 crystallized from a gel with a molar composition of 2:1:1:50:25:935 Na2O:K2O:MnO:SiO2:TEAOH:H2O at 175 degreesC after 3 days. The product was thermally stable up to 700 degreesC in air. The template-free MnS-1 was prepared by calcination at 550 degreesC in an oxygen flow. The incorporation of manganese into the framework sites of silicalite-1 was suggested by elemental, thermogravimetric, and cation exchange analyses. The X-ray absorption spectroscopic methods XANES and EXAFS confirmed the incorporation of Mn3+ into a silicalite-1 framework. FT-IR spectroscopic studies of CO adsorption at 100 K on the MnS-1 revealed the Lewis acidity of the sample and the presence of both Mn3+ and Mn2+ cations in the structure.
PB  - Amer Chemical Soc, Washington
T2  - Chemistry of Materials
T1  - Manganese-containing silica-based microporous molecular sieve MnS-1: Synthesis and characterization
EP  - 4750
IS  - 25
SP  - 4745
VL  - 15
DO  - 10.1021/cm031091c
ER  - 

@article{
author = "Tusar, NN and Zabukovec-Logar, Nataša and Arcon, Iztok and Thibault-Starzyk, Frederic and Ristić, A and Rajić, Nevenka and Kaučič, Venčeslav",
year = "2003",
abstract = "Manganese-containing silicalite-1 (MnS-1) was synthesized hydrothermally in the presence of the structure-directing agent (template) tetraethylammonium hydroxide (TEAOH) for the first time. The highly crystalline MnS-1 crystallized from a gel with a molar composition of 2:1:1:50:25:935 Na2O:K2O:MnO:SiO2:TEAOH:H2O at 175 degreesC after 3 days. The product was thermally stable up to 700 degreesC in air. The template-free MnS-1 was prepared by calcination at 550 degreesC in an oxygen flow. The incorporation of manganese into the framework sites of silicalite-1 was suggested by elemental, thermogravimetric, and cation exchange analyses. The X-ray absorption spectroscopic methods XANES and EXAFS confirmed the incorporation of Mn3+ into a silicalite-1 framework. FT-IR spectroscopic studies of CO adsorption at 100 K on the MnS-1 revealed the Lewis acidity of the sample and the presence of both Mn3+ and Mn2+ cations in the structure.",
publisher = "Amer Chemical Soc, Washington",
journal = "Chemistry of Materials",
title = "Manganese-containing silica-based microporous molecular sieve MnS-1: Synthesis and characterization",
pages = "4750-4745",
number = "25",
volume = "15",
doi = "10.1021/cm031091c"
}

Tusar, N., Zabukovec-Logar, N., Arcon, I., Thibault-Starzyk, F., Ristić, A., Rajić, N.,& Kaučič, V.. (2003). Manganese-containing silica-based microporous molecular sieve MnS-1: Synthesis and characterization. in Chemistry of Materials
Amer Chemical Soc, Washington., 15(25), 4745-4750.
https://doi.org/10.1021/cm031091c

Tusar N, Zabukovec-Logar N, Arcon I, Thibault-Starzyk F, Ristić A, Rajić N, Kaučič V. Manganese-containing silica-based microporous molecular sieve MnS-1: Synthesis and characterization. in Chemistry of Materials. 2003;15(25):4745-4750.
doi:10.1021/cm031091c .

Tusar, NN, Zabukovec-Logar, Nataša, Arcon, Iztok, Thibault-Starzyk, Frederic, Ristić, A, Rajić, Nevenka, Kaučič, Venčeslav, "Manganese-containing silica-based microporous molecular sieve MnS-1: Synthesis and characterization" in Chemistry of Materials, 15, no. 25 (2003):4745-4750,
https://doi.org/10.1021/cm031091c . .

TY  - JOUR
AU  - Rajić, Nevenka
AU  - Zabukovec-Logar, Nataša
AU  - Golobić, Amalija
AU  - Kaučič, Venčeslav
PY  - 2003
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/517
AB  - Colorless plate-like crystals (AIPO-1,2DAP) crystallize from a clear 'AlPO4-1,2-diaminopropane' reaction system. The results of elemental, thermal and FTIR analyses give the following chemical formula: (NH4+)(1,2-H(2)DAP)(2+)(AlP2O8)(3-), confirmed also by single crystal structure determination. The X-ray diffraction data collected at 150 K reveal the space group Pc2(1)n with a = 8.2788(2), b = 16.7882(3), c = 8.6608(2) Angstrom, and V = 1203.73(5) Angstrom(3). The AIPO-1,2DAP has a chain structure related to the aluminophosphate AlPO-enA structure. Two occluded cations, NH4+ and doubly protonated diamine, balance the negative charge and interact with the chain oxygen atoms via hydrogen bond network.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Journal of Physics and Chemistry of Solids
T1  - Synthesis and structure determination of a chain-like aluminophosphate obtained with 1,2-diaminopropane as the structure-directing agent
EP  - 1103
IS  - 7
SP  - 1097
VL  - 64
DO  - 10.1016/S0022-3697(03)00002-7
ER  - 

@article{
author = "Rajić, Nevenka and Zabukovec-Logar, Nataša and Golobić, Amalija and Kaučič, Venčeslav",
year = "2003",
abstract = "Colorless plate-like crystals (AIPO-1,2DAP) crystallize from a clear 'AlPO4-1,2-diaminopropane' reaction system. The results of elemental, thermal and FTIR analyses give the following chemical formula: (NH4+)(1,2-H(2)DAP)(2+)(AlP2O8)(3-), confirmed also by single crystal structure determination. The X-ray diffraction data collected at 150 K reveal the space group Pc2(1)n with a = 8.2788(2), b = 16.7882(3), c = 8.6608(2) Angstrom, and V = 1203.73(5) Angstrom(3). The AIPO-1,2DAP has a chain structure related to the aluminophosphate AlPO-enA structure. Two occluded cations, NH4+ and doubly protonated diamine, balance the negative charge and interact with the chain oxygen atoms via hydrogen bond network.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Journal of Physics and Chemistry of Solids",
title = "Synthesis and structure determination of a chain-like aluminophosphate obtained with 1,2-diaminopropane as the structure-directing agent",
pages = "1103-1097",
number = "7",
volume = "64",
doi = "10.1016/S0022-3697(03)00002-7"
}

Rajić, N., Zabukovec-Logar, N., Golobić, A.,& Kaučič, V.. (2003). Synthesis and structure determination of a chain-like aluminophosphate obtained with 1,2-diaminopropane as the structure-directing agent. in Journal of Physics and Chemistry of Solids
Pergamon-Elsevier Science Ltd, Oxford., 64(7), 1097-1103.
https://doi.org/10.1016/S0022-3697(03)00002-7

Rajić N, Zabukovec-Logar N, Golobić A, Kaučič V. Synthesis and structure determination of a chain-like aluminophosphate obtained with 1,2-diaminopropane as the structure-directing agent. in Journal of Physics and Chemistry of Solids. 2003;64(7):1097-1103.
doi:10.1016/S0022-3697(03)00002-7 .

Rajić, Nevenka, Zabukovec-Logar, Nataša, Golobić, Amalija, Kaučič, Venčeslav, "Synthesis and structure determination of a chain-like aluminophosphate obtained with 1,2-diaminopropane as the structure-directing agent" in Journal of Physics and Chemistry of Solids, 64, no. 7 (2003):1097-1103,
https://doi.org/10.1016/S0022-3697(03)00002-7 . .

TY  - JOUR
AU  - Mali, Gregor
AU  - Rajić, Nevenka
AU  - Zabukovec-Logar, Nataša
AU  - Kaučič, Venčeslav
PY  - 2003
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/533
AB  - Short-range order within a novel aluminophosphate-oxalate hybrid material with the unit cell formula CH2(NH3)CH(NH3)CH3Al4P6O20(OH)(4)(C2O4)H2O was studied by multinuclear solid-state NMR measurements. The C-13, Al-27, and P-31 MAS NMR spectra showed several resonance lines that could not be predicted by the single-crystal X-ray diffraction analysis. The underlying variety of carbon, aluminum, and phosphorus local environments was due to the nonuniform arrangement of the protonated 1,2-diaminopropane species and water molecules residing within the pores of the open-framework material. H-1-- gt C-13 CPMAS NNIR spectrum evidenced that the diaminopropane species either occupied two different positions or were present as two different isomers, which also gave rise to two slightly different deformations of one (P(3)O-4) of the three crystallographically distinct PO4 tetrahedra. One-dimensional H-1 and P-31 MAS and 2D H-1-- gt P-31 CPMAS spectra revealed that the water molecule, occupying a well-defined position within the pore with about 42% abundance, attracted H(2) from the hydroxyl group attached to the P(3) atom and involved the hydrogen atom into a strong hydrogen bond. The displacement of H(2) due to the interaction with the water molecule was determined by measuring H(2)-P(3) distances using H-1-- gt P-31 variable-contact-time CPMAS NMR experiments. As evidenced by Al-27 MAS and 3QMAS NMR spectra, the deformation of the P(3)O-4 tetrahedra by water and diaminopropane species further affected also local environments of the two proximal crystallographically inequivalent aluminum sites Al(1) and Al(2).
PB  - Amer Chemical Soc, Washington
T2  - Journal of Physical Chemistry B
T1  - Solid-state NMR study of an open-framework aluminophosphate-oxalate hybrid
EP  - 1292
IS  - 6
SP  - 1286
VL  - 107
DO  - 10.1021/jp026469t
ER  - 

@article{
author = "Mali, Gregor and Rajić, Nevenka and Zabukovec-Logar, Nataša and Kaučič, Venčeslav",
year = "2003",
abstract = "Short-range order within a novel aluminophosphate-oxalate hybrid material with the unit cell formula CH2(NH3)CH(NH3)CH3Al4P6O20(OH)(4)(C2O4)H2O was studied by multinuclear solid-state NMR measurements. The C-13, Al-27, and P-31 MAS NMR spectra showed several resonance lines that could not be predicted by the single-crystal X-ray diffraction analysis. The underlying variety of carbon, aluminum, and phosphorus local environments was due to the nonuniform arrangement of the protonated 1,2-diaminopropane species and water molecules residing within the pores of the open-framework material. H-1-- gt C-13 CPMAS NNIR spectrum evidenced that the diaminopropane species either occupied two different positions or were present as two different isomers, which also gave rise to two slightly different deformations of one (P(3)O-4) of the three crystallographically distinct PO4 tetrahedra. One-dimensional H-1 and P-31 MAS and 2D H-1-- gt P-31 CPMAS spectra revealed that the water molecule, occupying a well-defined position within the pore with about 42% abundance, attracted H(2) from the hydroxyl group attached to the P(3) atom and involved the hydrogen atom into a strong hydrogen bond. The displacement of H(2) due to the interaction with the water molecule was determined by measuring H(2)-P(3) distances using H-1-- gt P-31 variable-contact-time CPMAS NMR experiments. As evidenced by Al-27 MAS and 3QMAS NMR spectra, the deformation of the P(3)O-4 tetrahedra by water and diaminopropane species further affected also local environments of the two proximal crystallographically inequivalent aluminum sites Al(1) and Al(2).",
publisher = "Amer Chemical Soc, Washington",
journal = "Journal of Physical Chemistry B",
title = "Solid-state NMR study of an open-framework aluminophosphate-oxalate hybrid",
pages = "1292-1286",
number = "6",
volume = "107",
doi = "10.1021/jp026469t"
}

Mali, G., Rajić, N., Zabukovec-Logar, N.,& Kaučič, V.. (2003). Solid-state NMR study of an open-framework aluminophosphate-oxalate hybrid. in Journal of Physical Chemistry B
Amer Chemical Soc, Washington., 107(6), 1286-1292.
https://doi.org/10.1021/jp026469t

Mali G, Rajić N, Zabukovec-Logar N, Kaučič V. Solid-state NMR study of an open-framework aluminophosphate-oxalate hybrid. in Journal of Physical Chemistry B. 2003;107(6):1286-1292.
doi:10.1021/jp026469t .

Mali, Gregor, Rajić, Nevenka, Zabukovec-Logar, Nataša, Kaučič, Venčeslav, "Solid-state NMR study of an open-framework aluminophosphate-oxalate hybrid" in Journal of Physical Chemistry B, 107, no. 6 (2003):1286-1292,
https://doi.org/10.1021/jp026469t . .

TY  - JOUR
AU  - Rajić, Nevenka
AU  - Ceh, M
AU  - Gabrovsek, R
AU  - Kaučič, Venčeslav
PY  - 2002
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/442
AB  - Nanocrystalline transition-metal ferrites were synthesized inside an amorphous silica matrix by the sol-gel method. The formation of spinel ferrites began above 400degreesC, giving fine particles of about 10 nm at 800degreesC. This is associated with a specific role of the silica matrix, which facilitates the diffusion of the reacting cations, enhancing the ferrite formation. Above 1000degreesC the MnFe2O4 and CuFe2O4 nanoparticles lost their fine nature. The dried gels and crystalline materials were characterized by X-ray diffraction, thermal, FTIR, and BET analyses as well as by high-resolution scanning transmission electron microscopy.
PB  - Wiley, Hoboken
T2  - Journal of the American Ceramic Society
T1  - Formation of nanocrystalline transition-metal ferrites inside a silica matrix
EP  - 1724
IS  - 7
SP  - 1719
VL  - 85
UR  - https://hdl.handle.net/21.15107/rcub_technorep_442
ER  - 

@article{
author = "Rajić, Nevenka and Ceh, M and Gabrovsek, R and Kaučič, Venčeslav",
year = "2002",
abstract = "Nanocrystalline transition-metal ferrites were synthesized inside an amorphous silica matrix by the sol-gel method. The formation of spinel ferrites began above 400degreesC, giving fine particles of about 10 nm at 800degreesC. This is associated with a specific role of the silica matrix, which facilitates the diffusion of the reacting cations, enhancing the ferrite formation. Above 1000degreesC the MnFe2O4 and CuFe2O4 nanoparticles lost their fine nature. The dried gels and crystalline materials were characterized by X-ray diffraction, thermal, FTIR, and BET analyses as well as by high-resolution scanning transmission electron microscopy.",
publisher = "Wiley, Hoboken",
journal = "Journal of the American Ceramic Society",
title = "Formation of nanocrystalline transition-metal ferrites inside a silica matrix",
pages = "1724-1719",
number = "7",
volume = "85",
url = "https://hdl.handle.net/21.15107/rcub_technorep_442"
}

Rajić, N., Ceh, M., Gabrovsek, R.,& Kaučič, V.. (2002). Formation of nanocrystalline transition-metal ferrites inside a silica matrix. in Journal of the American Ceramic Society
Wiley, Hoboken., 85(7), 1719-1724.
https://hdl.handle.net/21.15107/rcub_technorep_442

Rajić N, Ceh M, Gabrovsek R, Kaučič V. Formation of nanocrystalline transition-metal ferrites inside a silica matrix. in Journal of the American Ceramic Society. 2002;85(7):1719-1724.
https://hdl.handle.net/21.15107/rcub_technorep_442 .

Rajić, Nevenka, Ceh, M, Gabrovsek, R, Kaučič, Venčeslav, "Formation of nanocrystalline transition-metal ferrites inside a silica matrix" in Journal of the American Ceramic Society, 85, no. 7 (2002):1719-1724,
https://hdl.handle.net/21.15107/rcub_technorep_442 .

TY  - JOUR
AU  - Rajić, Nevenka
AU  - Stojaković, D.
AU  - Hanžel, Darko
AU  - Zabukovec-Logar, Nataša
AU  - Kaučič, Venčeslav
PY  - 2002
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/446
AB  - Iron(III) phosphate-oxalate (FePO-DAP) crystallizes from a clear solution containing 1,2-diaminopropane (DAP) and oxalic acid at 120 degreesC under hydrothermal conditions. Doubly protonated DAP is present inside a large one-dimensional 12-membered channel in a disordered manner, its presence creating different environments for the Fe atoms situated across one another at the sides of the channel. This is evident by Mossbauer spectroscopy: the spectrum at 4.2 K exhibits two sextets with an identical isomer shift of about 0.42 mm/s. FePO-DAP undergoes magnetic ordering at a low temperature (19 K).
PB  - Elsevier, Amsterdam
T2  - Microporous and Mesoporous Materials
T1  - Preparation and characterization of iron(III) phosphate-oxalate using 1,2-diaminopropane as the structure-directing agent
EP  - 319
IS  - 3
SP  - 313
VL  - 55
DO  - 10.1016/S1387-1811(02)00434-1
ER  - 

@article{
author = "Rajić, Nevenka and Stojaković, D. and Hanžel, Darko and Zabukovec-Logar, Nataša and Kaučič, Venčeslav",
year = "2002",
abstract = "Iron(III) phosphate-oxalate (FePO-DAP) crystallizes from a clear solution containing 1,2-diaminopropane (DAP) and oxalic acid at 120 degreesC under hydrothermal conditions. Doubly protonated DAP is present inside a large one-dimensional 12-membered channel in a disordered manner, its presence creating different environments for the Fe atoms situated across one another at the sides of the channel. This is evident by Mossbauer spectroscopy: the spectrum at 4.2 K exhibits two sextets with an identical isomer shift of about 0.42 mm/s. FePO-DAP undergoes magnetic ordering at a low temperature (19 K).",
publisher = "Elsevier, Amsterdam",
journal = "Microporous and Mesoporous Materials",
title = "Preparation and characterization of iron(III) phosphate-oxalate using 1,2-diaminopropane as the structure-directing agent",
pages = "319-313",
number = "3",
volume = "55",
doi = "10.1016/S1387-1811(02)00434-1"
}

Rajić, N., Stojaković, D., Hanžel, D., Zabukovec-Logar, N.,& Kaučič, V.. (2002). Preparation and characterization of iron(III) phosphate-oxalate using 1,2-diaminopropane as the structure-directing agent. in Microporous and Mesoporous Materials
Elsevier, Amsterdam., 55(3), 313-319.
https://doi.org/10.1016/S1387-1811(02)00434-1

Rajić N, Stojaković D, Hanžel D, Zabukovec-Logar N, Kaučič V. Preparation and characterization of iron(III) phosphate-oxalate using 1,2-diaminopropane as the structure-directing agent. in Microporous and Mesoporous Materials. 2002;55(3):313-319.
doi:10.1016/S1387-1811(02)00434-1 .

Rajić, Nevenka, Stojaković, D., Hanžel, Darko, Zabukovec-Logar, Nataša, Kaučič, Venčeslav, "Preparation and characterization of iron(III) phosphate-oxalate using 1,2-diaminopropane as the structure-directing agent" in Microporous and Mesoporous Materials, 55, no. 3 (2002):313-319,
https://doi.org/10.1016/S1387-1811(02)00434-1 . .