TY  - JOUR
AU  - Milovanović, Jelena
AU  - Luque, Rafael
AU  - Tschentscher, Roman
AU  - Romero, Antonio A.
AU  - Li, Hangkong
AU  - Shih, Kaimin
AU  - Rajić, Nevenka
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5848
AB  - Several NiO contained-zeolites (NiO/H-ZSM-5, NiO/H-BETA and NiO/H-Y) prepared by a mechanochemical dry milling (MCDM) were tested in the pyrolysis of two hardwood lignins: Eucalyptus (EUC) and a mixture of birch and aspen woods (BA). All prepared catalysts increased the yield of aromatics and decreased the yield of oxygenates as compared to non-catalytic experiment. The catalytic activity depends on the lignin type and zeolite structural features. The highest liquid and gas yields and lowest coke yield was obtained with NiO/H-Y which also increased the amounts of desirable and decreased undesirable pyrolysis products, giving a high concentration of hydrogen in the gaseous phase. The highest yield of aromatics and the lowest yield of oxygenates was obtained with NiO/H-ZSM-5. The obtained results showed that BA is a more suitable feedstock, producing higher yields of liquids and aromatics and lower yields of coke and oxygenates.
PB  - Elsevier Ltd
T2  - Biomass and Bioenergy
T1  - Study on the pyrolysis products of two different hardwood lignins in the presence of NiO contained-zeolites
EP  - 34
SP  - 29
VL  - 103
DO  - 10.1016/j.biombioe.2017.05.007
ER  - 

@article{
author = "Milovanović, Jelena and Luque, Rafael and Tschentscher, Roman and Romero, Antonio A. and Li, Hangkong and Shih, Kaimin and Rajić, Nevenka",
year = "2017",
abstract = "Several NiO contained-zeolites (NiO/H-ZSM-5, NiO/H-BETA and NiO/H-Y) prepared by a mechanochemical dry milling (MCDM) were tested in the pyrolysis of two hardwood lignins: Eucalyptus (EUC) and a mixture of birch and aspen woods (BA). All prepared catalysts increased the yield of aromatics and decreased the yield of oxygenates as compared to non-catalytic experiment. The catalytic activity depends on the lignin type and zeolite structural features. The highest liquid and gas yields and lowest coke yield was obtained with NiO/H-Y which also increased the amounts of desirable and decreased undesirable pyrolysis products, giving a high concentration of hydrogen in the gaseous phase. The highest yield of aromatics and the lowest yield of oxygenates was obtained with NiO/H-ZSM-5. The obtained results showed that BA is a more suitable feedstock, producing higher yields of liquids and aromatics and lower yields of coke and oxygenates.",
publisher = "Elsevier Ltd",
journal = "Biomass and Bioenergy",
title = "Study on the pyrolysis products of two different hardwood lignins in the presence of NiO contained-zeolites",
pages = "34-29",
volume = "103",
doi = "10.1016/j.biombioe.2017.05.007"
}

Milovanović, J., Luque, R., Tschentscher, R., Romero, A. A., Li, H., Shih, K.,& Rajić, N.. (2017). Study on the pyrolysis products of two different hardwood lignins in the presence of NiO contained-zeolites. in Biomass and Bioenergy
Elsevier Ltd., 103, 29-34.
https://doi.org/10.1016/j.biombioe.2017.05.007

Milovanović J, Luque R, Tschentscher R, Romero AA, Li H, Shih K, Rajić N. Study on the pyrolysis products of two different hardwood lignins in the presence of NiO contained-zeolites. in Biomass and Bioenergy. 2017;103:29-34.
doi:10.1016/j.biombioe.2017.05.007 .

Milovanović, Jelena, Luque, Rafael, Tschentscher, Roman, Romero, Antonio A., Li, Hangkong, Shih, Kaimin, Rajić, Nevenka, "Study on the pyrolysis products of two different hardwood lignins in the presence of NiO contained-zeolites" in Biomass and Bioenergy, 103 (2017):29-34,
https://doi.org/10.1016/j.biombioe.2017.05.007 . .

TY  - JOUR
AU  - Milovanović, Jelena
AU  - Rajić, Nevenka
AU  - Romero, Antonio A.
AU  - Li, Hangkong
AU  - Shih, Kaimin
AU  - Tschentscher, Roman
AU  - Luque, Rafael
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3233
AB  - The depolymerization of biolignin (BL), eucalyptus (EL), and hardwood lignins (HL) to simple aromatics was studied by a microwave assisted approach using NiO/H-ZSM-S zeolites as catalysts. The catalysts prepared by the mechanochemical dry milling (MCDM) method contained bunsenite nano NiO particles with an average size of 67 mu m at a concentration of 1-4.8 wt % NiO. Yields and composition of the obtained bio-oils are highly dependent on lignin type as well as on the content of NiO. The highest bio-oil yield (about 20 wt %) was obtained using 3.5 wt % NiO and HL as the feedstock. A number of relevant findings based depolymerization experiments are provided which pointed to different monomeric products (mostly S-derived) that could be produced in different proportions depending on the source of investigated lignin and content of the NiO at H-ZSM-5.
PB  - Amer Chemical Soc, Washington
T2  - ACS Sustainable Chemistry & Engineering
T1  - Insights into the Microwave-Assisted Mild Deconstruction of Lignin Feedstocks Using NiO-Containing ZSM-5 Zeolites
EP  - 4313
IS  - 8
SP  - 4305
VL  - 4
DO  - 10.1021/acssuschemeng.6b00825
ER  - 

@article{
author = "Milovanović, Jelena and Rajić, Nevenka and Romero, Antonio A. and Li, Hangkong and Shih, Kaimin and Tschentscher, Roman and Luque, Rafael",
year = "2016",
abstract = "The depolymerization of biolignin (BL), eucalyptus (EL), and hardwood lignins (HL) to simple aromatics was studied by a microwave assisted approach using NiO/H-ZSM-S zeolites as catalysts. The catalysts prepared by the mechanochemical dry milling (MCDM) method contained bunsenite nano NiO particles with an average size of 67 mu m at a concentration of 1-4.8 wt % NiO. Yields and composition of the obtained bio-oils are highly dependent on lignin type as well as on the content of NiO. The highest bio-oil yield (about 20 wt %) was obtained using 3.5 wt % NiO and HL as the feedstock. A number of relevant findings based depolymerization experiments are provided which pointed to different monomeric products (mostly S-derived) that could be produced in different proportions depending on the source of investigated lignin and content of the NiO at H-ZSM-5.",
publisher = "Amer Chemical Soc, Washington",
journal = "ACS Sustainable Chemistry & Engineering",
title = "Insights into the Microwave-Assisted Mild Deconstruction of Lignin Feedstocks Using NiO-Containing ZSM-5 Zeolites",
pages = "4313-4305",
number = "8",
volume = "4",
doi = "10.1021/acssuschemeng.6b00825"
}

Milovanović, J., Rajić, N., Romero, A. A., Li, H., Shih, K., Tschentscher, R.,& Luque, R.. (2016). Insights into the Microwave-Assisted Mild Deconstruction of Lignin Feedstocks Using NiO-Containing ZSM-5 Zeolites. in ACS Sustainable Chemistry & Engineering
Amer Chemical Soc, Washington., 4(8), 4305-4313.
https://doi.org/10.1021/acssuschemeng.6b00825

Milovanović J, Rajić N, Romero AA, Li H, Shih K, Tschentscher R, Luque R. Insights into the Microwave-Assisted Mild Deconstruction of Lignin Feedstocks Using NiO-Containing ZSM-5 Zeolites. in ACS Sustainable Chemistry & Engineering. 2016;4(8):4305-4313.
doi:10.1021/acssuschemeng.6b00825 .

Milovanović, Jelena, Rajić, Nevenka, Romero, Antonio A., Li, Hangkong, Shih, Kaimin, Tschentscher, Roman, Luque, Rafael, "Insights into the Microwave-Assisted Mild Deconstruction of Lignin Feedstocks Using NiO-Containing ZSM-5 Zeolites" in ACS Sustainable Chemistry & Engineering, 4, no. 8 (2016):4305-4313,
https://doi.org/10.1021/acssuschemeng.6b00825 . .

TY  - JOUR
AU  - Milovanović, Jelena A.
AU  - Stensrod, Ruth Elisabeth
AU  - Myhrvold, Elisabeth M.
AU  - Tschentscher, Roman
AU  - Stocker, Michael
AU  - Lazarević, Slavica
AU  - Rajić, Nevenka
PY  - 2015
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3155
AB  - In this work, different metal oxides (MO) supported on two types of zeolites: 1) natural clinoptilolite (NZ) and 2) synthetic zeolite, ZSM-5 were prepared and tested as catalysts in the fast pyrolysis of hardwood lignin. NZ was modified with the CaO and MgO by a simple two steps procedure consisting of an ion exchange reaction and subsequent calcination at 773 K. The synthetic ZSM-5 was modified with several MO species (Ni, Cu, Ca, Mg) by wet impregnation and calcination at 873 K. The prepared catalysts were characterized by X-ray diffraction analysis (XRD), scanning electron microscopy and energy dispersive X-ray analysis (SEM/EDS), and measurement of their specific surface area (BET method). Acid sites were characterized and quantified by pyridine (py) absorption using Fourier transform infrared spectroscopy (FTIR). The catalysts exhibit catalytic activity depending on modification, reaction temperature and of the MO contents. The highest yield of useful phenol in bio-oil was obtained with NiO/ZSM-5 (34.8 wt. %) which exhibits the highest specific surface area and the highest concentration of Bronsted and Lewis acid sites. The studied catalysts did not increase significantly the content of polycyclic aromatic hydrocarbons (PAHs) and 'heavy' compounds (phenols with M-r  gt  164 g mol(-1)) compared to non-catalytic experiment.
PB  - Srpsko hemijsko društvo, Beograd
T2  - Journal of the Serbian Chemical Society
T1  - Modification of natural clinoptilolite and ZSM-5 with different oxides and a study of the obtained products in lignin pyrolysis
EP  - 729
IS  - 5
SP  - 717
VL  - 80
DO  - 10.2298/JSC310714109M
ER  - 

@article{
author = "Milovanović, Jelena A. and Stensrod, Ruth Elisabeth and Myhrvold, Elisabeth M. and Tschentscher, Roman and Stocker, Michael and Lazarević, Slavica and Rajić, Nevenka",
year = "2015",
abstract = "In this work, different metal oxides (MO) supported on two types of zeolites: 1) natural clinoptilolite (NZ) and 2) synthetic zeolite, ZSM-5 were prepared and tested as catalysts in the fast pyrolysis of hardwood lignin. NZ was modified with the CaO and MgO by a simple two steps procedure consisting of an ion exchange reaction and subsequent calcination at 773 K. The synthetic ZSM-5 was modified with several MO species (Ni, Cu, Ca, Mg) by wet impregnation and calcination at 873 K. The prepared catalysts were characterized by X-ray diffraction analysis (XRD), scanning electron microscopy and energy dispersive X-ray analysis (SEM/EDS), and measurement of their specific surface area (BET method). Acid sites were characterized and quantified by pyridine (py) absorption using Fourier transform infrared spectroscopy (FTIR). The catalysts exhibit catalytic activity depending on modification, reaction temperature and of the MO contents. The highest yield of useful phenol in bio-oil was obtained with NiO/ZSM-5 (34.8 wt. %) which exhibits the highest specific surface area and the highest concentration of Bronsted and Lewis acid sites. The studied catalysts did not increase significantly the content of polycyclic aromatic hydrocarbons (PAHs) and 'heavy' compounds (phenols with M-r  gt  164 g mol(-1)) compared to non-catalytic experiment.",
publisher = "Srpsko hemijsko društvo, Beograd",
journal = "Journal of the Serbian Chemical Society",
title = "Modification of natural clinoptilolite and ZSM-5 with different oxides and a study of the obtained products in lignin pyrolysis",
pages = "729-717",
number = "5",
volume = "80",
doi = "10.2298/JSC310714109M"
}

Milovanović, J. A., Stensrod, R. E., Myhrvold, E. M., Tschentscher, R., Stocker, M., Lazarević, S.,& Rajić, N.. (2015). Modification of natural clinoptilolite and ZSM-5 with different oxides and a study of the obtained products in lignin pyrolysis. in Journal of the Serbian Chemical Society
Srpsko hemijsko društvo, Beograd., 80(5), 717-729.
https://doi.org/10.2298/JSC310714109M

Milovanović JA, Stensrod RE, Myhrvold EM, Tschentscher R, Stocker M, Lazarević S, Rajić N. Modification of natural clinoptilolite and ZSM-5 with different oxides and a study of the obtained products in lignin pyrolysis. in Journal of the Serbian Chemical Society. 2015;80(5):717-729.
doi:10.2298/JSC310714109M .

Milovanović, Jelena A., Stensrod, Ruth Elisabeth, Myhrvold, Elisabeth M., Tschentscher, Roman, Stocker, Michael, Lazarević, Slavica, Rajić, Nevenka, "Modification of natural clinoptilolite and ZSM-5 with different oxides and a study of the obtained products in lignin pyrolysis" in Journal of the Serbian Chemical Society, 80, no. 5 (2015):717-729,
https://doi.org/10.2298/JSC310714109M . .