TY  - JOUR
AU  - Zagorac, Jelena B.
AU  - Jovanović, D.
AU  - Volkov-Husović, Tatjana
AU  - Matović, Branko
AU  - Zagorac, Dejan
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4537
AB  - Ab initio data mining approach has been used in order to investigate B6O system and discover new possible modifications, besides experimentally known R-3m (alpha-B6O) structure and theoretically predicted Cmcm (beta-B6O) structure. DFT calculations were performed by two different functionals, LDA and PBE. In this work, we focus on the structure, mechanical, and electronic properties of the experimentally known alpha-B6O structure and newly predicted modifications with the B6O stoichiometry. Moreover, mechanical properties including elastic constants, bulk, shear and elastic moduli, Poisson's ratio, Pugh's criterion, and hardness are given for the investigated modifications of B6O. In particular, we have investigated the influence of the high pressure on the electronic and mechanical properties. Results of our study provide more insight in the B6O superhard material and open new possibilities for various device applications.
PB  - IOP Publishing Ltd, Bristol
T2  - Modelling and Simulation in Materials Science and Engineering
T1  - Structure prediction, high pressure effect and properties investigation of superhard B6O
IS  - 3
VL  - 28
DO  - 10.1088/1361-651X/ab6ec8
ER  - 

@article{
author = "Zagorac, Jelena B. and Jovanović, D. and Volkov-Husović, Tatjana and Matović, Branko and Zagorac, Dejan",
year = "2020",
abstract = "Ab initio data mining approach has been used in order to investigate B6O system and discover new possible modifications, besides experimentally known R-3m (alpha-B6O) structure and theoretically predicted Cmcm (beta-B6O) structure. DFT calculations were performed by two different functionals, LDA and PBE. In this work, we focus on the structure, mechanical, and electronic properties of the experimentally known alpha-B6O structure and newly predicted modifications with the B6O stoichiometry. Moreover, mechanical properties including elastic constants, bulk, shear and elastic moduli, Poisson's ratio, Pugh's criterion, and hardness are given for the investigated modifications of B6O. In particular, we have investigated the influence of the high pressure on the electronic and mechanical properties. Results of our study provide more insight in the B6O superhard material and open new possibilities for various device applications.",
publisher = "IOP Publishing Ltd, Bristol",
journal = "Modelling and Simulation in Materials Science and Engineering",
title = "Structure prediction, high pressure effect and properties investigation of superhard B6O",
number = "3",
volume = "28",
doi = "10.1088/1361-651X/ab6ec8"
}

Zagorac, J. B., Jovanović, D., Volkov-Husović, T., Matović, B.,& Zagorac, D.. (2020). Structure prediction, high pressure effect and properties investigation of superhard B6O. in Modelling and Simulation in Materials Science and Engineering
IOP Publishing Ltd, Bristol., 28(3).
https://doi.org/10.1088/1361-651X/ab6ec8

Zagorac JB, Jovanović D, Volkov-Husović T, Matović B, Zagorac D. Structure prediction, high pressure effect and properties investigation of superhard B6O. in Modelling and Simulation in Materials Science and Engineering. 2020;28(3).
doi:10.1088/1361-651X/ab6ec8 .

Zagorac, Jelena B., Jovanović, D., Volkov-Husović, Tatjana, Matović, Branko, Zagorac, Dejan, "Structure prediction, high pressure effect and properties investigation of superhard B6O" in Modelling and Simulation in Materials Science and Engineering, 28, no. 3 (2020),
https://doi.org/10.1088/1361-651X/ab6ec8 . .

TY  - JOUR
AU  - Lukić, Ivana
AU  - Krstić, Jugoslav
AU  - Jovanović, D.
AU  - Skala, Dejan
PY  - 2009
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1432
AB  - The new type of catalyst for fatty acid methyl esters (FAME or biodiesel) synthesis with K2CO3 as active component on alumina/silica support was synthesized using sol-gel method. Corresponding catalyst (xerogel) was prepared by 12 h drying the wet gel in air at 300 degrees C, 600 degrees C or 1000 degrees C at atmospheric pressure. The catalysts activity in the methanolysis of sunflower oil was compared to the activity of the pure K2CO3. The effects of various reaction variables on the yield of FAME were investigated. It was found that the temperature of 120 degrees C and methanol to oil molar ratio of 15: 1, are optimal conditions for FAME synthesis with synthesized catalyst. Repeated use of same amount of catalyst indicated that effect of potassium leaching obviously existed leading to decrease of catalyst activity.
PB  - Elsevier Sci Ltd, Oxford
T2  - Bioresource Technology
T1  - Alumina/silica supported K2CO3 as a catalyst for biodiesel synthesis from sunflower oil
EP  - 4696
IS  - 20
SP  - 4690
VL  - 100
DO  - 10.1016/j.biortech.2009.04.057
ER  - 

@article{
author = "Lukić, Ivana and Krstić, Jugoslav and Jovanović, D. and Skala, Dejan",
year = "2009",
abstract = "The new type of catalyst for fatty acid methyl esters (FAME or biodiesel) synthesis with K2CO3 as active component on alumina/silica support was synthesized using sol-gel method. Corresponding catalyst (xerogel) was prepared by 12 h drying the wet gel in air at 300 degrees C, 600 degrees C or 1000 degrees C at atmospheric pressure. The catalysts activity in the methanolysis of sunflower oil was compared to the activity of the pure K2CO3. The effects of various reaction variables on the yield of FAME were investigated. It was found that the temperature of 120 degrees C and methanol to oil molar ratio of 15: 1, are optimal conditions for FAME synthesis with synthesized catalyst. Repeated use of same amount of catalyst indicated that effect of potassium leaching obviously existed leading to decrease of catalyst activity.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Bioresource Technology",
title = "Alumina/silica supported K2CO3 as a catalyst for biodiesel synthesis from sunflower oil",
pages = "4696-4690",
number = "20",
volume = "100",
doi = "10.1016/j.biortech.2009.04.057"
}

Lukić, I., Krstić, J., Jovanović, D.,& Skala, D.. (2009). Alumina/silica supported K2CO3 as a catalyst for biodiesel synthesis from sunflower oil. in Bioresource Technology
Elsevier Sci Ltd, Oxford., 100(20), 4690-4696.
https://doi.org/10.1016/j.biortech.2009.04.057

Lukić I, Krstić J, Jovanović D, Skala D. Alumina/silica supported K2CO3 as a catalyst for biodiesel synthesis from sunflower oil. in Bioresource Technology. 2009;100(20):4690-4696.
doi:10.1016/j.biortech.2009.04.057 .

Lukić, Ivana, Krstić, Jugoslav, Jovanović, D., Skala, Dejan, "Alumina/silica supported K2CO3 as a catalyst for biodiesel synthesis from sunflower oil" in Bioresource Technology, 100, no. 20 (2009):4690-4696,
https://doi.org/10.1016/j.biortech.2009.04.057 . .

TY  - JOUR
AU  - Romhanji, Endre
AU  - Popović, Miljana
AU  - Glišić, Dragomir
AU  - Dodok, Radomir
AU  - Jovanović, D.
PY  - 2006
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/971
AB  - Formability of Al-Mg4.5-Cu0.5 alloy sheets was tested after annealing at different temperatures (220-520 degrees C) and water quenching. The formability (normalized limiting dome heights, LDH/R) showed only a small variation for all the samples with recrystallized structure, i.e. the LDH/R-e(2) curves were within similar to 13% in the range of plane strain deformation. The samples annealed at 280 degrees C experienced a formability level at the upper limit of the band containing all the LDHIR values. The formability rating seems to be the result of the complex interaction of the strain hardening ability and strain rate sensitivity (SRS) due to different structural features developed during different annealing conditions.
PB  - Elsevier Science Sa, Lausanne
T2  - Journal of Materials Processing Technology
T1  - Effect of annealing temperature on the formability of Al-Mg4.5-Cu0.5 alloy sheets
EP  - 389
IS  - 1-3
SP  - 386
VL  - 177
DO  - 10.1016/j.jmatprotec.2006.04.036
ER  - 

@article{
author = "Romhanji, Endre and Popović, Miljana and Glišić, Dragomir and Dodok, Radomir and Jovanović, D.",
year = "2006",
abstract = "Formability of Al-Mg4.5-Cu0.5 alloy sheets was tested after annealing at different temperatures (220-520 degrees C) and water quenching. The formability (normalized limiting dome heights, LDH/R) showed only a small variation for all the samples with recrystallized structure, i.e. the LDH/R-e(2) curves were within similar to 13% in the range of plane strain deformation. The samples annealed at 280 degrees C experienced a formability level at the upper limit of the band containing all the LDHIR values. The formability rating seems to be the result of the complex interaction of the strain hardening ability and strain rate sensitivity (SRS) due to different structural features developed during different annealing conditions.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Journal of Materials Processing Technology",
title = "Effect of annealing temperature on the formability of Al-Mg4.5-Cu0.5 alloy sheets",
pages = "389-386",
number = "1-3",
volume = "177",
doi = "10.1016/j.jmatprotec.2006.04.036"
}

Romhanji, E., Popović, M., Glišić, D., Dodok, R.,& Jovanović, D.. (2006). Effect of annealing temperature on the formability of Al-Mg4.5-Cu0.5 alloy sheets. in Journal of Materials Processing Technology
Elsevier Science Sa, Lausanne., 177(1-3), 386-389.
https://doi.org/10.1016/j.jmatprotec.2006.04.036

Romhanji E, Popović M, Glišić D, Dodok R, Jovanović D. Effect of annealing temperature on the formability of Al-Mg4.5-Cu0.5 alloy sheets. in Journal of Materials Processing Technology. 2006;177(1-3):386-389.
doi:10.1016/j.jmatprotec.2006.04.036 .

Romhanji, Endre, Popović, Miljana, Glišić, Dragomir, Dodok, Radomir, Jovanović, D., "Effect of annealing temperature on the formability of Al-Mg4.5-Cu0.5 alloy sheets" in Journal of Materials Processing Technology, 177, no. 1-3 (2006):386-389,
https://doi.org/10.1016/j.jmatprotec.2006.04.036 . .

TY  - JOUR
AU  - Romhanji, Endre
AU  - Popović, Miljana
AU  - Glišić, Dragomir
AU  - Dodok, Radomir
AU  - Jovanović, D.
PY  - 2005
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/772
AB  - Deformation behavior of the AlMg4.5Cu0.5 type alloy sheets was examined after cold rolling and annealing in the range of temperature from 220°C to 520°C, water quenching and natural aging. The low temperature annealed samples, characterized by fine grained recrystallized structure and high content of Cu-Mg precipitates, have shown a superior hardening ability in uniaxial tension and formability in biaxial stretching. The natural aging didn't bring any important changes of the properties in respect to the as-quenched condition of the tested material.
PB  - Savez inženjera metalurgije Srbije, Beograd
T2  - Metalurgija
T1  - Deformation behavior of the AlMg4.5Cu0.5 type alloy sheet
EP  - 274
IS  - 4
SP  - 267
VL  - 11
UR  - https://hdl.handle.net/21.15107/rcub_technorep_772
ER  - 

@article{
author = "Romhanji, Endre and Popović, Miljana and Glišić, Dragomir and Dodok, Radomir and Jovanović, D.",
year = "2005",
abstract = "Deformation behavior of the AlMg4.5Cu0.5 type alloy sheets was examined after cold rolling and annealing in the range of temperature from 220°C to 520°C, water quenching and natural aging. The low temperature annealed samples, characterized by fine grained recrystallized structure and high content of Cu-Mg precipitates, have shown a superior hardening ability in uniaxial tension and formability in biaxial stretching. The natural aging didn't bring any important changes of the properties in respect to the as-quenched condition of the tested material.",
publisher = "Savez inženjera metalurgije Srbije, Beograd",
journal = "Metalurgija",
title = "Deformation behavior of the AlMg4.5Cu0.5 type alloy sheet",
pages = "274-267",
number = "4",
volume = "11",
url = "https://hdl.handle.net/21.15107/rcub_technorep_772"
}

Romhanji, E., Popović, M., Glišić, D., Dodok, R.,& Jovanović, D.. (2005). Deformation behavior of the AlMg4.5Cu0.5 type alloy sheet. in Metalurgija
Savez inženjera metalurgije Srbije, Beograd., 11(4), 267-274.
https://hdl.handle.net/21.15107/rcub_technorep_772

Romhanji E, Popović M, Glišić D, Dodok R, Jovanović D. Deformation behavior of the AlMg4.5Cu0.5 type alloy sheet. in Metalurgija. 2005;11(4):267-274.
https://hdl.handle.net/21.15107/rcub_technorep_772 .

Romhanji, Endre, Popović, Miljana, Glišić, Dragomir, Dodok, Radomir, Jovanović, D., "Deformation behavior of the AlMg4.5Cu0.5 type alloy sheet" in Metalurgija, 11, no. 4 (2005):267-274,
https://hdl.handle.net/21.15107/rcub_technorep_772 .

TY  - JOUR
AU  - Skala, Dejan
AU  - Orlović, Aleksandar
AU  - Marković, B.
AU  - Tarlecki-Barićević, Ana
AU  - Jovanović, D.
PY  - 2002
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/405
AB  - The performed investigations were directed toward the analysis of the performance and activity of the fresh and regenerated Cyanamid HDS 20C catalyst in a laboratory batch reactor (2 dm3) for the HDS of the diesel fraction (light gas oil, LGO). Testing of the regenerated catalyst was performed with light gas oil (LGO) of different characteristics. The determined values of the reaction rate constant were compared to some published data in the literature for the HDS of specific sulfur compounds as well as the values of the activation energy. The rates of deactivation of the fresh and regenerated catalyst actually existed compared to some other results recently published in the literature. However, such an observed differences were not sufficient to derive a relation which could be used for the determination of the rate of catalyst deactivation.
PB  - Association of the Chemical Engineers of Serbia
T2  - Chemical Industry & Chemical Engineering Quarterly
T1  - Hydrodesulfurization of light gas oil - kinetic determination in a batch reactor
T1  - Hidrodesulfurizacija lakog gasnog ulja - ispitivanje kinetike HDS u šaržnom reaktoru
EP  - 532
IS  - 4
SP  - 529
VL  - 8
DO  - 10.2298/HEMIND0212529S
ER  - 

@article{
author = "Skala, Dejan and Orlović, Aleksandar and Marković, B. and Tarlecki-Barićević, Ana and Jovanović, D.",
year = "2002",
abstract = "The performed investigations were directed toward the analysis of the performance and activity of the fresh and regenerated Cyanamid HDS 20C catalyst in a laboratory batch reactor (2 dm3) for the HDS of the diesel fraction (light gas oil, LGO). Testing of the regenerated catalyst was performed with light gas oil (LGO) of different characteristics. The determined values of the reaction rate constant were compared to some published data in the literature for the HDS of specific sulfur compounds as well as the values of the activation energy. The rates of deactivation of the fresh and regenerated catalyst actually existed compared to some other results recently published in the literature. However, such an observed differences were not sufficient to derive a relation which could be used for the determination of the rate of catalyst deactivation.",
publisher = "Association of the Chemical Engineers of Serbia",
journal = "Chemical Industry & Chemical Engineering Quarterly",
title = "Hydrodesulfurization of light gas oil - kinetic determination in a batch reactor, Hidrodesulfurizacija lakog gasnog ulja - ispitivanje kinetike HDS u šaržnom reaktoru",
pages = "532-529",
number = "4",
volume = "8",
doi = "10.2298/HEMIND0212529S"
}

Skala, D., Orlović, A., Marković, B., Tarlecki-Barićević, A.,& Jovanović, D.. (2002). Hydrodesulfurization of light gas oil - kinetic determination in a batch reactor. in Chemical Industry & Chemical Engineering Quarterly
Association of the Chemical Engineers of Serbia., 8(4), 529-532.
https://doi.org/10.2298/HEMIND0212529S

Skala D, Orlović A, Marković B, Tarlecki-Barićević A, Jovanović D. Hydrodesulfurization of light gas oil - kinetic determination in a batch reactor. in Chemical Industry & Chemical Engineering Quarterly. 2002;8(4):529-532.
doi:10.2298/HEMIND0212529S .

Skala, Dejan, Orlović, Aleksandar, Marković, B., Tarlecki-Barićević, Ana, Jovanović, D., "Hydrodesulfurization of light gas oil - kinetic determination in a batch reactor" in Chemical Industry & Chemical Engineering Quarterly, 8, no. 4 (2002):529-532,
https://doi.org/10.2298/HEMIND0212529S . .