TY  - JOUR
AU  - Todorović, Zoran
AU  - Đorđević, Biljana
AU  - Troter, Dragan
AU  - Veselinović, Ljiljana
AU  - Zdujić, Miodrag
AU  - Veljković, Vlada
PY  - 2023
UR  - https://dais.sanu.ac.rs/123456789/15139
AB  - Deep eutectic solvents (DESs) are called 'designer solvents' due to various structural variations and the benefit of tailoring their physicochemical properties. For industrial applications of DESs it is crucial to know their physical and thermodynamic properties such as density, viscosity, and refractive index. These properties were measured for three lecithin (LEC)-based DESs with glycerol (G), triethanolamine (TEOA), and oleic acid (OLA) as functions of temperature. The viscosity was fitted by both Arrhenius-type and Vogel-Tamman-Fulcher equations. The density, viscosity, and refractive index of tested DESs decreased with the increase in temperature. The LEC:G DES exhibited the lowest density at all tested tempe-ratures. This DES was selected as a cosolvent in the ethanolysis of cold-pressed black mustard (Brassica nigra L.) seed oil catalyzed by either calcined or non-calcined CaO. The reaction was carried out in a batch stirred reactor under the following conditions: the temperature of 70 °C, the ethanol-to-oil molar ratio of 12:1, and the amount of DES and CaO of 20 and 10 wt.% (to oil), respectively. The presence of DES accelerated the reaction, while the separation of the final reaction mixture phases was faster.
PB  - Belgrade : Association of the Chemical Engineers of Serbia
T2  - Hemijska industrija
T1  - Effects of temperature on physicochemical properties of the lecithin based deep eutectic solvents and their use in the CaO-catalyzed transesterification
SP  - 53
EP  - 67
VL  - 77
IS  - 1
DO  - 10.2298/HEMIND220527016T
UR  - https://hdl.handle.net/21.15107/rcub_dais_15139
ER  - 

@article{
author = "Todorović, Zoran and Đorđević, Biljana and Troter, Dragan and Veselinović, Ljiljana and Zdujić, Miodrag and Veljković, Vlada",
year = "2023",
abstract = "Deep eutectic solvents (DESs) are called 'designer solvents' due to various structural variations and the benefit of tailoring their physicochemical properties. For industrial applications of DESs it is crucial to know their physical and thermodynamic properties such as density, viscosity, and refractive index. These properties were measured for three lecithin (LEC)-based DESs with glycerol (G), triethanolamine (TEOA), and oleic acid (OLA) as functions of temperature. The viscosity was fitted by both Arrhenius-type and Vogel-Tamman-Fulcher equations. The density, viscosity, and refractive index of tested DESs decreased with the increase in temperature. The LEC:G DES exhibited the lowest density at all tested tempe-ratures. This DES was selected as a cosolvent in the ethanolysis of cold-pressed black mustard (Brassica nigra L.) seed oil catalyzed by either calcined or non-calcined CaO. The reaction was carried out in a batch stirred reactor under the following conditions: the temperature of 70 °C, the ethanol-to-oil molar ratio of 12:1, and the amount of DES and CaO of 20 and 10 wt.% (to oil), respectively. The presence of DES accelerated the reaction, while the separation of the final reaction mixture phases was faster.",
publisher = "Belgrade : Association of the Chemical Engineers of Serbia",
journal = "Hemijska industrija",
title = "Effects of temperature on physicochemical properties of the lecithin based deep eutectic solvents and their use in the CaO-catalyzed transesterification",
pages = "53-67",
volume = "77",
number = "1",
doi = "10.2298/HEMIND220527016T",
url = "https://hdl.handle.net/21.15107/rcub_dais_15139"
}

Todorović, Z., Đorđević, B., Troter, D., Veselinović, L., Zdujić, M.,& Veljković, V.. (2023). Effects of temperature on physicochemical properties of the lecithin based deep eutectic solvents and their use in the CaO-catalyzed transesterification. in Hemijska industrija
Belgrade : Association of the Chemical Engineers of Serbia., 77(1), 53-67.
https://doi.org/10.2298/HEMIND220527016T
https://hdl.handle.net/21.15107/rcub_dais_15139

Todorović Z, Đorđević B, Troter D, Veselinović L, Zdujić M, Veljković V. Effects of temperature on physicochemical properties of the lecithin based deep eutectic solvents and their use in the CaO-catalyzed transesterification. in Hemijska industrija. 2023;77(1):53-67.
doi:10.2298/HEMIND220527016T
https://hdl.handle.net/21.15107/rcub_dais_15139 .

Todorović, Zoran, Đorđević, Biljana, Troter, Dragan, Veselinović, Ljiljana, Zdujić, Miodrag, Veljković, Vlada, "Effects of temperature on physicochemical properties of the lecithin based deep eutectic solvents and their use in the CaO-catalyzed transesterification" in Hemijska industrija, 77, no. 1 (2023):53-67,
https://doi.org/10.2298/HEMIND220527016T .,
https://hdl.handle.net/21.15107/rcub_dais_15139 .

TY  - GEN
AU  - Troter, Dragan
AU  - Todorović, Zoran
AU  - Veličković, Ana V.
AU  - Avramović, Jelena M.
AU  - Stamenković, Olivera
AU  - Veselinović, Ljiljana
AU  - Veljković, Vlada
PY  - 2023
UR  - https://dais.sanu.ac.rs/123456789/15264
AB  - Tehnološki postupak dobijanja metil-estara masnih kiselina iz suncokretovog ulja u prisustvu sirovog biodizela kao kosolventa i CaO kao katalizatora testiran je na laboratorijskom nivou. Istraživanje je urađeno radi validacije tehnološkog procesa, određivanja prinosa i sastava MEMK, kao i mogućnosti ponovnog korišćenja izdvojenog katalizatora u reakciji, bez ikakvog dodatnog tretmana prečišćavanja ili kalcnacije. Definisan tehnološki postupak je šaržnog tipa i obuhvata sedam faza jednog ciklusa: aktivacija katalizatora, metanoliza suncokretovog ulja, izdvajanje katalizatora centrifugiranjem, uparivanje metil-estarske faze (tj. sirovog biodizela) i sušenje biodizela.
PB  - Niš : Univerzitet u Nišu, Tehnološki fakultet u Leskovcu
T1  - Tehnološki postupak dobijanja metil-estara masnih kiselina iz suncokretovog ulja u prisustvu sirovog biodizela kao kosolventa i kalcijum-oksida kao katalizatora : tehničko rešenje
UR  - https://hdl.handle.net/21.15107/rcub_dais_15264
ER  - 

@misc{
author = "Troter, Dragan and Todorović, Zoran and Veličković, Ana V. and Avramović, Jelena M. and Stamenković, Olivera and Veselinović, Ljiljana and Veljković, Vlada",
year = "2023",
abstract = "Tehnološki postupak dobijanja metil-estara masnih kiselina iz suncokretovog ulja u prisustvu sirovog biodizela kao kosolventa i CaO kao katalizatora testiran je na laboratorijskom nivou. Istraživanje je urađeno radi validacije tehnološkog procesa, određivanja prinosa i sastava MEMK, kao i mogućnosti ponovnog korišćenja izdvojenog katalizatora u reakciji, bez ikakvog dodatnog tretmana prečišćavanja ili kalcnacije. Definisan tehnološki postupak je šaržnog tipa i obuhvata sedam faza jednog ciklusa: aktivacija katalizatora, metanoliza suncokretovog ulja, izdvajanje katalizatora centrifugiranjem, uparivanje metil-estarske faze (tj. sirovog biodizela) i sušenje biodizela.",
publisher = "Niš : Univerzitet u Nišu, Tehnološki fakultet u Leskovcu",
title = "Tehnološki postupak dobijanja metil-estara masnih kiselina iz suncokretovog ulja u prisustvu sirovog biodizela kao kosolventa i kalcijum-oksida kao katalizatora : tehničko rešenje",
url = "https://hdl.handle.net/21.15107/rcub_dais_15264"
}

Troter, D., Todorović, Z., Veličković, A. V., Avramović, J. M., Stamenković, O., Veselinović, L.,& Veljković, V.. (2023). Tehnološki postupak dobijanja metil-estara masnih kiselina iz suncokretovog ulja u prisustvu sirovog biodizela kao kosolventa i kalcijum-oksida kao katalizatora : tehničko rešenje. 
Niš : Univerzitet u Nišu, Tehnološki fakultet u Leskovcu..
https://hdl.handle.net/21.15107/rcub_dais_15264

Troter D, Todorović Z, Veličković AV, Avramović JM, Stamenković O, Veselinović L, Veljković V. Tehnološki postupak dobijanja metil-estara masnih kiselina iz suncokretovog ulja u prisustvu sirovog biodizela kao kosolventa i kalcijum-oksida kao katalizatora : tehničko rešenje. 2023;.
https://hdl.handle.net/21.15107/rcub_dais_15264 .

Troter, Dragan, Todorović, Zoran, Veličković, Ana V., Avramović, Jelena M., Stamenković, Olivera, Veselinović, Ljiljana, Veljković, Vlada, "Tehnološki postupak dobijanja metil-estara masnih kiselina iz suncokretovog ulja u prisustvu sirovog biodizela kao kosolventa i kalcijum-oksida kao katalizatora : tehničko rešenje" (2023),
https://hdl.handle.net/21.15107/rcub_dais_15264 .

TY  - DATA
AU  - Todorović, Zoran B.
AU  - Troter, Dragan Z.
AU  - Đokić-Stojanović, Dušica R.
AU  - Veličković, Ana V.
AU  - Avramović, Jelena M.
AU  - Stamenković, Olivera S.
AU  - Veselinović, Ljiljana
AU  - Veljković, Vlada B.
PY  - 2019
UR  - https://dais.sanu.ac.rs/123456789/4071
AB  - Figure S1. Variation of FAME content during the sunflower oil methanolysis with CaO as a 
catalyst and crude biodiesel as a cosolvent; Figure S2. XRD patterns of the calcined CaO used as a catalyst in combination with different 
amounts of crude biodiesel as a cosolvent. XRD pattern of the calcined CaO not used in the 
reaction was also provided for comparison.
T2  - Fuel
T1  - Supplementary data for the article: Todorović, Zoran B., Dragan Z. Troter, Dušica R. Đokić-Stojanović, Ana V. Veličković, Jelena M. Avramović, Olivera S. Stamenković, Ljiljana M. Veselinović, and Vlada B. Veljković. 2019. “Optimization of CaO-Catalyzed Sunflower Oil Methanolysis with Crude Biodiesel as a Cosolvent.” Fuel 237 (February): 903–10. https://doi.org/10.1016/j.fuel.2018.10.056
UR  - https://hdl.handle.net/21.15107/rcub_dais_4071
ER  - 

@misc{
author = "Todorović, Zoran B. and Troter, Dragan Z. and Đokić-Stojanović, Dušica R. and Veličković, Ana V. and Avramović, Jelena M. and Stamenković, Olivera S. and Veselinović, Ljiljana and Veljković, Vlada B.",
year = "2019",
abstract = "Figure S1. Variation of FAME content during the sunflower oil methanolysis with CaO as a 
catalyst and crude biodiesel as a cosolvent; Figure S2. XRD patterns of the calcined CaO used as a catalyst in combination with different 
amounts of crude biodiesel as a cosolvent. XRD pattern of the calcined CaO not used in the 
reaction was also provided for comparison.",
journal = "Fuel",
title = "Supplementary data for the article: Todorović, Zoran B., Dragan Z. Troter, Dušica R. Đokić-Stojanović, Ana V. Veličković, Jelena M. Avramović, Olivera S. Stamenković, Ljiljana M. Veselinović, and Vlada B. Veljković. 2019. “Optimization of CaO-Catalyzed Sunflower Oil Methanolysis with Crude Biodiesel as a Cosolvent.” Fuel 237 (February): 903–10. https://doi.org/10.1016/j.fuel.2018.10.056",
url = "https://hdl.handle.net/21.15107/rcub_dais_4071"
}

Todorović, Z. B., Troter, D. Z., Đokić-Stojanović, D. R., Veličković, A. V., Avramović, J. M., Stamenković, O. S., Veselinović, L.,& Veljković, V. B.. (2019). Supplementary data for the article: Todorović, Zoran B., Dragan Z. Troter, Dušica R. Đokić-Stojanović, Ana V. Veličković, Jelena M. Avramović, Olivera S. Stamenković, Ljiljana M. Veselinović, and Vlada B. Veljković. 2019. “Optimization of CaO-Catalyzed Sunflower Oil Methanolysis with Crude Biodiesel as a Cosolvent.” Fuel 237 (February): 903–10. https://doi.org/10.1016/j.fuel.2018.10.056. in Fuel.
https://hdl.handle.net/21.15107/rcub_dais_4071

Todorović ZB, Troter DZ, Đokić-Stojanović DR, Veličković AV, Avramović JM, Stamenković OS, Veselinović L, Veljković VB. Supplementary data for the article: Todorović, Zoran B., Dragan Z. Troter, Dušica R. Đokić-Stojanović, Ana V. Veličković, Jelena M. Avramović, Olivera S. Stamenković, Ljiljana M. Veselinović, and Vlada B. Veljković. 2019. “Optimization of CaO-Catalyzed Sunflower Oil Methanolysis with Crude Biodiesel as a Cosolvent.” Fuel 237 (February): 903–10. https://doi.org/10.1016/j.fuel.2018.10.056. in Fuel. 2019;.
https://hdl.handle.net/21.15107/rcub_dais_4071 .

Todorović, Zoran B., Troter, Dragan Z., Đokić-Stojanović, Dušica R., Veličković, Ana V., Avramović, Jelena M., Stamenković, Olivera S., Veselinović, Ljiljana, Veljković, Vlada B., "Supplementary data for the article: Todorović, Zoran B., Dragan Z. Troter, Dušica R. Đokić-Stojanović, Ana V. Veličković, Jelena M. Avramović, Olivera S. Stamenković, Ljiljana M. Veselinović, and Vlada B. Veljković. 2019. “Optimization of CaO-Catalyzed Sunflower Oil Methanolysis with Crude Biodiesel as a Cosolvent.” Fuel 237 (February): 903–10. https://doi.org/10.1016/j.fuel.2018.10.056" in Fuel (2019),
https://hdl.handle.net/21.15107/rcub_dais_4071 .

TY  - JOUR
AU  - Todorović, Zoran B.
AU  - Troter, Dragan Z.
AU  - Đokić-Stojanović, Dušica R.
AU  - Veličković, Ana V.
AU  - Avramović, Jelena M.
AU  - Stamenković, Olivera S.
AU  - Veselinović, Ljiljana
AU  - Veljković, Vlada B.
PY  - 2019
UR  - http://www.sciencedirect.com/science/article/pii/S0016236118317691
UR  - https://dais.sanu.ac.rs/123456789/4070
AB  - Crude biodiesel was proven as a cosolvent in the methanolysis of sunflower oil catalyzed by calcined CaO. This reaction was modeled and optimized statistically in terms of reaction temperature (33.2–66.8 °C), methanol-to-oil molar ratio (3.5:1–8.5:1) and catalyst concentration (0.219–1.065 mol/L). The cosolvent loading was 10 wt% (based on oil weight). The optimum reaction conditions were found to be: the methanol-to-oil molar ratio of 7.1:1, the catalyst concentration of 0.74 mol/L and the reaction temperature 52 °C, ensuring the best esters content of 99.8%, for the reaction time of 1.5 h, which is close to the reported experimental value of 98.9%. Also, the used catalyst was recycled with no additional treatment in the further four consecutive cycles under the following reaction conditions: methanol-to-oil molar ratio 6:1, the concentration of catalyst 0.642 mol/L (only in the first run), the reaction temperature 50 °C, cosolvent-crude biodiesel loading 10 wt% to oil weight. The second recycling reaction provided the highest FAME content of 97.7% after 5 h.
PB  - Elsevier
T2  - Fuel
T1  - Optimization of CaO-catalyzed sunflower oil methanolysis with crude biodiesel as a cosolvent
SP  - 903
EP  - 910
VL  - 237
DO  - 10.1016/j.fuel.2018.10.056
UR  - https://hdl.handle.net/21.15107/rcub_dais_4070
ER  - 

@article{
author = "Todorović, Zoran B. and Troter, Dragan Z. and Đokić-Stojanović, Dušica R. and Veličković, Ana V. and Avramović, Jelena M. and Stamenković, Olivera S. and Veselinović, Ljiljana and Veljković, Vlada B.",
year = "2019",
abstract = "Crude biodiesel was proven as a cosolvent in the methanolysis of sunflower oil catalyzed by calcined CaO. This reaction was modeled and optimized statistically in terms of reaction temperature (33.2–66.8 °C), methanol-to-oil molar ratio (3.5:1–8.5:1) and catalyst concentration (0.219–1.065 mol/L). The cosolvent loading was 10 wt% (based on oil weight). The optimum reaction conditions were found to be: the methanol-to-oil molar ratio of 7.1:1, the catalyst concentration of 0.74 mol/L and the reaction temperature 52 °C, ensuring the best esters content of 99.8%, for the reaction time of 1.5 h, which is close to the reported experimental value of 98.9%. Also, the used catalyst was recycled with no additional treatment in the further four consecutive cycles under the following reaction conditions: methanol-to-oil molar ratio 6:1, the concentration of catalyst 0.642 mol/L (only in the first run), the reaction temperature 50 °C, cosolvent-crude biodiesel loading 10 wt% to oil weight. The second recycling reaction provided the highest FAME content of 97.7% after 5 h.",
publisher = "Elsevier",
journal = "Fuel",
title = "Optimization of CaO-catalyzed sunflower oil methanolysis with crude biodiesel as a cosolvent",
pages = "903-910",
volume = "237",
doi = "10.1016/j.fuel.2018.10.056",
url = "https://hdl.handle.net/21.15107/rcub_dais_4070"
}

Todorović, Z. B., Troter, D. Z., Đokić-Stojanović, D. R., Veličković, A. V., Avramović, J. M., Stamenković, O. S., Veselinović, L.,& Veljković, V. B.. (2019). Optimization of CaO-catalyzed sunflower oil methanolysis with crude biodiesel as a cosolvent. in Fuel
Elsevier., 237, 903-910.
https://doi.org/10.1016/j.fuel.2018.10.056
https://hdl.handle.net/21.15107/rcub_dais_4070

Todorović ZB, Troter DZ, Đokić-Stojanović DR, Veličković AV, Avramović JM, Stamenković OS, Veselinović L, Veljković VB. Optimization of CaO-catalyzed sunflower oil methanolysis with crude biodiesel as a cosolvent. in Fuel. 2019;237:903-910.
doi:10.1016/j.fuel.2018.10.056
https://hdl.handle.net/21.15107/rcub_dais_4070 .

Todorović, Zoran B., Troter, Dragan Z., Đokić-Stojanović, Dušica R., Veličković, Ana V., Avramović, Jelena M., Stamenković, Olivera S., Veselinović, Ljiljana, Veljković, Vlada B., "Optimization of CaO-catalyzed sunflower oil methanolysis with crude biodiesel as a cosolvent" in Fuel, 237 (2019):903-910,
https://doi.org/10.1016/j.fuel.2018.10.056 .,
https://hdl.handle.net/21.15107/rcub_dais_4070 .

TY  - JOUR
AU  - Todorović, Zoran B.
AU  - Troter, Dragan Z.
AU  - Đokić Stojanović, Dušica R.
AU  - Veličković, Ana V.
AU  - Avramović, Jelena M.
AU  - Stamenković, Olivera S.
AU  - Veselinović, Ljiljana
AU  - Veljković, Vlada B.
PY  - 2019
UR  - http://www.sciencedirect.com/science/article/pii/S0016236118317691
UR  - https://dais.sanu.ac.rs/123456789/4069
AB  - Crude biodiesel was proven as a cosolvent in the methanolysis of sunflower oil catalyzed by calcined CaO. This reaction was modeled and optimized statistically in terms of reaction temperature (33.2–66.8 °C), methanol-to-oil molar ratio (3.5:1–8.5:1) and catalyst concentration (0.219–1.065 mol/L). The cosolvent loading was 10 wt% (based on oil weight). The optimum reaction conditions were found to be: the methanol-to-oil molar ratio of 7.1:1, the catalyst concentration of 0.74 mol/L and the reaction temperature 52 °C, ensuring the best esters content of 99.8%, for the reaction time of 1.5 h, which is close to the reported experimental value of 98.9%. Also, the used catalyst was recycled with no additional treatment in the further four consecutive cycles under the following reaction conditions: methanol-to-oil molar ratio 6:1, the concentration of catalyst 0.642 mol/L (only in the first run), the reaction temperature 50 °C, cosolvent-crude biodiesel loading 10 wt% to oil weight. The second recycling reaction provided the highest FAME content of 97.7% after 5 h.
PB  - Elsevier
T2  - Fuel
T1  - Optimization of CaO-catalyzed sunflower oil methanolysis with crude biodiesel as a cosolvent
SP  - 903
EP  - 910
VL  - 237
DO  - 10.1016/j.fuel.2018.10.056
UR  - https://hdl.handle.net/21.15107/rcub_dais_4069
ER  - 

@article{
author = "Todorović, Zoran B. and Troter, Dragan Z. and Đokić Stojanović, Dušica R. and Veličković, Ana V. and Avramović, Jelena M. and Stamenković, Olivera S. and Veselinović, Ljiljana and Veljković, Vlada B.",
year = "2019",
abstract = "Crude biodiesel was proven as a cosolvent in the methanolysis of sunflower oil catalyzed by calcined CaO. This reaction was modeled and optimized statistically in terms of reaction temperature (33.2–66.8 °C), methanol-to-oil molar ratio (3.5:1–8.5:1) and catalyst concentration (0.219–1.065 mol/L). The cosolvent loading was 10 wt% (based on oil weight). The optimum reaction conditions were found to be: the methanol-to-oil molar ratio of 7.1:1, the catalyst concentration of 0.74 mol/L and the reaction temperature 52 °C, ensuring the best esters content of 99.8%, for the reaction time of 1.5 h, which is close to the reported experimental value of 98.9%. Also, the used catalyst was recycled with no additional treatment in the further four consecutive cycles under the following reaction conditions: methanol-to-oil molar ratio 6:1, the concentration of catalyst 0.642 mol/L (only in the first run), the reaction temperature 50 °C, cosolvent-crude biodiesel loading 10 wt% to oil weight. The second recycling reaction provided the highest FAME content of 97.7% after 5 h.",
publisher = "Elsevier",
journal = "Fuel",
title = "Optimization of CaO-catalyzed sunflower oil methanolysis with crude biodiesel as a cosolvent",
pages = "903-910",
volume = "237",
doi = "10.1016/j.fuel.2018.10.056",
url = "https://hdl.handle.net/21.15107/rcub_dais_4069"
}

Todorović, Z. B., Troter, D. Z., Đokić Stojanović, D. R., Veličković, A. V., Avramović, J. M., Stamenković, O. S., Veselinović, L.,& Veljković, V. B.. (2019). Optimization of CaO-catalyzed sunflower oil methanolysis with crude biodiesel as a cosolvent. in Fuel
Elsevier., 237, 903-910.
https://doi.org/10.1016/j.fuel.2018.10.056
https://hdl.handle.net/21.15107/rcub_dais_4069

Todorović ZB, Troter DZ, Đokić Stojanović DR, Veličković AV, Avramović JM, Stamenković OS, Veselinović L, Veljković VB. Optimization of CaO-catalyzed sunflower oil methanolysis with crude biodiesel as a cosolvent. in Fuel. 2019;237:903-910.
doi:10.1016/j.fuel.2018.10.056
https://hdl.handle.net/21.15107/rcub_dais_4069 .

Todorović, Zoran B., Troter, Dragan Z., Đokić Stojanović, Dušica R., Veličković, Ana V., Avramović, Jelena M., Stamenković, Olivera S., Veselinović, Ljiljana, Veljković, Vlada B., "Optimization of CaO-catalyzed sunflower oil methanolysis with crude biodiesel as a cosolvent" in Fuel, 237 (2019):903-910,
https://doi.org/10.1016/j.fuel.2018.10.056 .,
https://hdl.handle.net/21.15107/rcub_dais_4069 .

TY  - JOUR
AU  - Đokić Stojanović, Dušica R.
AU  - Todorović, Zoran B.
AU  - Troter, Dragan
AU  - Stamenković, Olivera S.
AU  - Veselinović, Ljiljana
AU  - Zdujić, Miodrag
AU  - Manojlović, Dragan D.
AU  - Veljković, Vlada B.
PY  - 2019
UR  - https://dais.sanu.ac.rs/123456789/6183
AB  - Ten organic solvents (triethanolamine, diethanolamine, ethylene glycol, methyl ethyl ketone, n-hexane, triethylamine, ethylene glycol dimethyl ether, glycerol, tetrahydrofuran and dioxane) were applied as cosolvents in the CaO-catalyzed ethanolysis of sunflower oil performed in a batch stirred reactor under the following reaction conditions: temperature 70 °C, ethanol-to-oil mole ratio 12:1, initial catalyst concentration 1.374 mol·L -1 and amount of cosolvent 20 % based on the oil amount. The main goals were to assess the effect of the used cosolvents on the synthesis of fatty acid ethyl esters (FAEE) and to select the most efficient one with respect to the final FAEE content, reaction duration and safety profile. In the absence of any cosolvent, the reaction was rather slow, providing a FAEE content of only 89.7±1.7 % after 4 h. Of the tested cosolvents, diethanolamine, triethanolamine and ethylene glycol significantly accelerated the ethanolysis reaction, whereby the last two provided a final FAEE content of 93.1±2.1 and 94.1±1.5 %, respectively, within 0.5 h. However, because of its safety profile, triethanolamine was selected as the best cosolvent for the ethanolysis of sunflower oil catalyzed by calcined CaO.
PB  - Belgrade : Serbian Chemical Society
T2  - Journal of the Serbian Chemical Society
T1  - Influence of various cosolvents on the calcium oxide-catalyzed ethanolysis of sunflower oil
SP  - 253
EP  - 265
VL  - 84
IS  - 3
DO  - 10.2298/JSC180827007D
UR  - https://hdl.handle.net/21.15107/rcub_dais_6183
ER  - 

@article{
author = "Đokić Stojanović, Dušica R. and Todorović, Zoran B. and Troter, Dragan and Stamenković, Olivera S. and Veselinović, Ljiljana and Zdujić, Miodrag and Manojlović, Dragan D. and Veljković, Vlada B.",
year = "2019",
abstract = "Ten organic solvents (triethanolamine, diethanolamine, ethylene glycol, methyl ethyl ketone, n-hexane, triethylamine, ethylene glycol dimethyl ether, glycerol, tetrahydrofuran and dioxane) were applied as cosolvents in the CaO-catalyzed ethanolysis of sunflower oil performed in a batch stirred reactor under the following reaction conditions: temperature 70 °C, ethanol-to-oil mole ratio 12:1, initial catalyst concentration 1.374 mol·L -1 and amount of cosolvent 20 % based on the oil amount. The main goals were to assess the effect of the used cosolvents on the synthesis of fatty acid ethyl esters (FAEE) and to select the most efficient one with respect to the final FAEE content, reaction duration and safety profile. In the absence of any cosolvent, the reaction was rather slow, providing a FAEE content of only 89.7±1.7 % after 4 h. Of the tested cosolvents, diethanolamine, triethanolamine and ethylene glycol significantly accelerated the ethanolysis reaction, whereby the last two provided a final FAEE content of 93.1±2.1 and 94.1±1.5 %, respectively, within 0.5 h. However, because of its safety profile, triethanolamine was selected as the best cosolvent for the ethanolysis of sunflower oil catalyzed by calcined CaO.",
publisher = "Belgrade : Serbian Chemical Society",
journal = "Journal of the Serbian Chemical Society",
title = "Influence of various cosolvents on the calcium oxide-catalyzed ethanolysis of sunflower oil",
pages = "253-265",
volume = "84",
number = "3",
doi = "10.2298/JSC180827007D",
url = "https://hdl.handle.net/21.15107/rcub_dais_6183"
}

Đokić Stojanović, D. R., Todorović, Z. B., Troter, D., Stamenković, O. S., Veselinović, L., Zdujić, M., Manojlović, D. D.,& Veljković, V. B.. (2019). Influence of various cosolvents on the calcium oxide-catalyzed ethanolysis of sunflower oil. in Journal of the Serbian Chemical Society
Belgrade : Serbian Chemical Society., 84(3), 253-265.
https://doi.org/10.2298/JSC180827007D
https://hdl.handle.net/21.15107/rcub_dais_6183

Đokić Stojanović DR, Todorović ZB, Troter D, Stamenković OS, Veselinović L, Zdujić M, Manojlović DD, Veljković VB. Influence of various cosolvents on the calcium oxide-catalyzed ethanolysis of sunflower oil. in Journal of the Serbian Chemical Society. 2019;84(3):253-265.
doi:10.2298/JSC180827007D
https://hdl.handle.net/21.15107/rcub_dais_6183 .

Đokić Stojanović, Dušica R., Todorović, Zoran B., Troter, Dragan, Stamenković, Olivera S., Veselinović, Ljiljana, Zdujić, Miodrag, Manojlović, Dragan D., Veljković, Vlada B., "Influence of various cosolvents on the calcium oxide-catalyzed ethanolysis of sunflower oil" in Journal of the Serbian Chemical Society, 84, no. 3 (2019):253-265,
https://doi.org/10.2298/JSC180827007D .,
https://hdl.handle.net/21.15107/rcub_dais_6183 .

TY  - JOUR
AU  - Đokić-Stojanović, Dušica R.
AU  - Todorović, Zoran B.
AU  - Troter, Dragan Z.
AU  - Stamenković, Olivera S.
AU  - Veselinović, Ljiljana
AU  - Zdujić, Miodrag
AU  - Manojlović, Dragan D.
AU  - Veljković, Vlada B.
PY  - 2019
UR  - https://dais.sanu.ac.rs/123456789/7041
AB  - Triethanolamine was applied as an efficient „green“ cosolvent for biodiesel production by CaO-catalyzed ethanolysis of sunflower oil. The reaction was conducted in a batch stirred reactor and optimized with respect to the reaction temperature (61.6-78.4 °C), the ethanol-to-oil molar ratio (7:1-17:1) and the cosolvent loading (3-36 % of the oil weight) by using a rotatable central composite design (RCCD) combined with the response surface methodology (RSM). The optimal reaction conditions were found to be: the ethanol-to-oil molar ratio of 9:1, the reaction temperature of 75 °C and the cosolvent loading of 30 % to oil weight, which resulted in the predicted and actual fatty acid ethyl ester (FAEE) contents of 98.8 % and 97.9±1.3 %, respectively, achieved within only 20 min of the reaction. Also, high FAEE contents were obtained with expired sunflower oil, hempseed oil and waste lard. X-ray diffraction analysis (XRD) was used to understand the changes in the CaO phase. The CaO catalyst can be used without any treatment in two consecutive cycles. Due to the calcium leaching into the product, an additional purification stage must be included in the overall process.
T2  - Hemijska industrija
T1  - Triethanolamine as an efficient cosolvent for biodiesel production by CaO-catalyzed sunflower oil ethanolysis: An optimization study
SP  - 351
EP  - 362
VL  - 73
IS  - 6
DO  - 10.2298/HEMIND190822033D
UR  - https://hdl.handle.net/21.15107/rcub_dais_7041
ER  - 

@article{
author = "Đokić-Stojanović, Dušica R. and Todorović, Zoran B. and Troter, Dragan Z. and Stamenković, Olivera S. and Veselinović, Ljiljana and Zdujić, Miodrag and Manojlović, Dragan D. and Veljković, Vlada B.",
year = "2019",
abstract = "Triethanolamine was applied as an efficient „green“ cosolvent for biodiesel production by CaO-catalyzed ethanolysis of sunflower oil. The reaction was conducted in a batch stirred reactor and optimized with respect to the reaction temperature (61.6-78.4 °C), the ethanol-to-oil molar ratio (7:1-17:1) and the cosolvent loading (3-36 % of the oil weight) by using a rotatable central composite design (RCCD) combined with the response surface methodology (RSM). The optimal reaction conditions were found to be: the ethanol-to-oil molar ratio of 9:1, the reaction temperature of 75 °C and the cosolvent loading of 30 % to oil weight, which resulted in the predicted and actual fatty acid ethyl ester (FAEE) contents of 98.8 % and 97.9±1.3 %, respectively, achieved within only 20 min of the reaction. Also, high FAEE contents were obtained with expired sunflower oil, hempseed oil and waste lard. X-ray diffraction analysis (XRD) was used to understand the changes in the CaO phase. The CaO catalyst can be used without any treatment in two consecutive cycles. Due to the calcium leaching into the product, an additional purification stage must be included in the overall process.",
journal = "Hemijska industrija",
title = "Triethanolamine as an efficient cosolvent for biodiesel production by CaO-catalyzed sunflower oil ethanolysis: An optimization study",
pages = "351-362",
volume = "73",
number = "6",
doi = "10.2298/HEMIND190822033D",
url = "https://hdl.handle.net/21.15107/rcub_dais_7041"
}

Đokić-Stojanović, D. R., Todorović, Z. B., Troter, D. Z., Stamenković, O. S., Veselinović, L., Zdujić, M., Manojlović, D. D.,& Veljković, V. B.. (2019). Triethanolamine as an efficient cosolvent for biodiesel production by CaO-catalyzed sunflower oil ethanolysis: An optimization study. in Hemijska industrija, 73(6), 351-362.
https://doi.org/10.2298/HEMIND190822033D
https://hdl.handle.net/21.15107/rcub_dais_7041

Đokić-Stojanović DR, Todorović ZB, Troter DZ, Stamenković OS, Veselinović L, Zdujić M, Manojlović DD, Veljković VB. Triethanolamine as an efficient cosolvent for biodiesel production by CaO-catalyzed sunflower oil ethanolysis: An optimization study. in Hemijska industrija. 2019;73(6):351-362.
doi:10.2298/HEMIND190822033D
https://hdl.handle.net/21.15107/rcub_dais_7041 .

Đokić-Stojanović, Dušica R., Todorović, Zoran B., Troter, Dragan Z., Stamenković, Olivera S., Veselinović, Ljiljana, Zdujić, Miodrag, Manojlović, Dragan D., Veljković, Vlada B., "Triethanolamine as an efficient cosolvent for biodiesel production by CaO-catalyzed sunflower oil ethanolysis: An optimization study" in Hemijska industrija, 73, no. 6 (2019):351-362,
https://doi.org/10.2298/HEMIND190822033D .,
https://hdl.handle.net/21.15107/rcub_dais_7041 .

TY  - DATA
AU  - Đokić-Stojanović, Dušica R.
AU  - Todorović, Zoran B.
AU  - Troter, Dragan Z.
AU  - Stamenković, Olivera S.
AU  - Veselinović, Ljiljana
AU  - Zdujić, Miodrag
AU  - Manojlović, Dragan D.
AU  - Veljković, Vlada B.
PY  - 2019
UR  - https://www.ache-pub.org.rs/index.php/HemInd/article/view/587/pdf_1
UR  - https://dais.sanu.ac.rs/123456789/7043
AB  - Figure D1. Normal probability plot of residuals (a), Cook's distances (b) and predicted and actual values of FAEE content (c); Table D1. Results of sequential model sum of squares test; Table D2. Results of lack of fit test; Table D3. Results of model summary statistics test
T2  - Hemijska industrija
T1  - Supplementary material to Triethanolamine as an efficient cosolvent for biodiesel production by CaO-catalyzed sunflower oil ethanolysis: An optimization study
SP  - D17
EP  - D18
VL  - 73
IS  - 6
UR  - https://hdl.handle.net/21.15107/rcub_dais_7043
ER  - 

@misc{
author = "Đokić-Stojanović, Dušica R. and Todorović, Zoran B. and Troter, Dragan Z. and Stamenković, Olivera S. and Veselinović, Ljiljana and Zdujić, Miodrag and Manojlović, Dragan D. and Veljković, Vlada B.",
year = "2019",
abstract = "Figure D1. Normal probability plot of residuals (a), Cook's distances (b) and predicted and actual values of FAEE content (c); Table D1. Results of sequential model sum of squares test; Table D2. Results of lack of fit test; Table D3. Results of model summary statistics test",
journal = "Hemijska industrija",
title = "Supplementary material to Triethanolamine as an efficient cosolvent for biodiesel production by CaO-catalyzed sunflower oil ethanolysis: An optimization study",
pages = "D17-D18",
volume = "73",
number = "6",
url = "https://hdl.handle.net/21.15107/rcub_dais_7043"
}

Đokić-Stojanović, D. R., Todorović, Z. B., Troter, D. Z., Stamenković, O. S., Veselinović, L., Zdujić, M., Manojlović, D. D.,& Veljković, V. B.. (2019). Supplementary material to Triethanolamine as an efficient cosolvent for biodiesel production by CaO-catalyzed sunflower oil ethanolysis: An optimization study. in Hemijska industrija, 73(6), D17-D18.
https://hdl.handle.net/21.15107/rcub_dais_7043

Đokić-Stojanović DR, Todorović ZB, Troter DZ, Stamenković OS, Veselinović L, Zdujić M, Manojlović DD, Veljković VB. Supplementary material to Triethanolamine as an efficient cosolvent for biodiesel production by CaO-catalyzed sunflower oil ethanolysis: An optimization study. in Hemijska industrija. 2019;73(6):D17-D18.
https://hdl.handle.net/21.15107/rcub_dais_7043 .

Đokić-Stojanović, Dušica R., Todorović, Zoran B., Troter, Dragan Z., Stamenković, Olivera S., Veselinović, Ljiljana, Zdujić, Miodrag, Manojlović, Dragan D., Veljković, Vlada B., "Supplementary material to Triethanolamine as an efficient cosolvent for biodiesel production by CaO-catalyzed sunflower oil ethanolysis: An optimization study" in Hemijska industrija, 73, no. 6 (2019):D17-D18,
https://hdl.handle.net/21.15107/rcub_dais_7043 .

TY  - DATA
AU  - Troter, Dragan Z.
AU  - Todorović, Zoran B.
AU  - Đokić Stojanović, Dušica R.
AU  - Veselinović, Ljiljana
AU  - Zdujić, Miodrag
AU  - Veljković, Vlada B.
PY  - 2018
UR  - https://dais.sanu.ac.rs/123456789/3772
AB  - Fig. S.1 The variations of the FAEE content with the progress of expired sunflower oils ethanolysis catalyzed by non-calcined CaO, calcined CaO, Ca(OH)2 and CaCO3; Fig. S.2 Temperature dependence of the density (a) and the viscosity (b) of ethanol and ethanol mixed with the studied DESs: ChCl:EG, ChCl:PG, ChCl:G, ChCl:U, ChCl:DMU and ChCl:TU; Fig. S.3 Reusability of non-calcined CaO catalyst activated by different DESs. CaO activated with a DES was used in the first batch, while only the recovered CaO was used in the other
batches; 4
Fig. S.4 The FAEE content after 2 h reaction in four consecutive batches of the sunflower oil
ethanolysis catalyzed by either fresh or recovered CaO catalysts in the presence of the
recovered ChCl:G DES as a cosolvent (70 °C and the ethanol-to-oil molar ratio was 12:1;
reaction systems: recovered ChCl:G DES/glycerol product and recovered CaO - black rectangles, recovered ChCl:G DES/glycerol product and fesh CaO - white rectangles, and
treated recovered ChCl:G DES/glycerol product was coupled with fresh CaO - gray rectangles)
T2  - Journal of Molecular Liquids
T1  - Supplementary material for the article: Troter, D.Z., Todorović, Z.B., Đokić-Stojanović, D.R., Veselinović, L.M., Zdujić, M.V., Veljković, V.B., 2018. Choline chloride-based deep eutectic solvents in CaO-catalyzed ethanolysis of expired sunflower oil. Journal of Molecular Liquids 266, 557–567. https://doi.org/10.1016/j.molliq.2018.06.106
VL  - 266
UR  - https://hdl.handle.net/21.15107/rcub_dais_3772
ER  - 

@misc{
author = "Troter, Dragan Z. and Todorović, Zoran B. and Đokić Stojanović, Dušica R. and Veselinović, Ljiljana and Zdujić, Miodrag and Veljković, Vlada B.",
year = "2018",
abstract = "Fig. S.1 The variations of the FAEE content with the progress of expired sunflower oils ethanolysis catalyzed by non-calcined CaO, calcined CaO, Ca(OH)2 and CaCO3; Fig. S.2 Temperature dependence of the density (a) and the viscosity (b) of ethanol and ethanol mixed with the studied DESs: ChCl:EG, ChCl:PG, ChCl:G, ChCl:U, ChCl:DMU and ChCl:TU; Fig. S.3 Reusability of non-calcined CaO catalyst activated by different DESs. CaO activated with a DES was used in the first batch, while only the recovered CaO was used in the other
batches; 4
Fig. S.4 The FAEE content after 2 h reaction in four consecutive batches of the sunflower oil
ethanolysis catalyzed by either fresh or recovered CaO catalysts in the presence of the
recovered ChCl:G DES as a cosolvent (70 °C and the ethanol-to-oil molar ratio was 12:1;
reaction systems: recovered ChCl:G DES/glycerol product and recovered CaO - black rectangles, recovered ChCl:G DES/glycerol product and fesh CaO - white rectangles, and
treated recovered ChCl:G DES/glycerol product was coupled with fresh CaO - gray rectangles)",
journal = "Journal of Molecular Liquids",
title = "Supplementary material for the article: Troter, D.Z., Todorović, Z.B., Đokić-Stojanović, D.R., Veselinović, L.M., Zdujić, M.V., Veljković, V.B., 2018. Choline chloride-based deep eutectic solvents in CaO-catalyzed ethanolysis of expired sunflower oil. Journal of Molecular Liquids 266, 557–567. https://doi.org/10.1016/j.molliq.2018.06.106",
volume = "266",
url = "https://hdl.handle.net/21.15107/rcub_dais_3772"
}

Troter, D. Z., Todorović, Z. B., Đokić Stojanović, D. R., Veselinović, L., Zdujić, M.,& Veljković, V. B.. (2018). Supplementary material for the article: Troter, D.Z., Todorović, Z.B., Đokić-Stojanović, D.R., Veselinović, L.M., Zdujić, M.V., Veljković, V.B., 2018. Choline chloride-based deep eutectic solvents in CaO-catalyzed ethanolysis of expired sunflower oil. Journal of Molecular Liquids 266, 557–567. https://doi.org/10.1016/j.molliq.2018.06.106. in Journal of Molecular Liquids, 266.
https://hdl.handle.net/21.15107/rcub_dais_3772

Troter DZ, Todorović ZB, Đokić Stojanović DR, Veselinović L, Zdujić M, Veljković VB. Supplementary material for the article: Troter, D.Z., Todorović, Z.B., Đokić-Stojanović, D.R., Veselinović, L.M., Zdujić, M.V., Veljković, V.B., 2018. Choline chloride-based deep eutectic solvents in CaO-catalyzed ethanolysis of expired sunflower oil. Journal of Molecular Liquids 266, 557–567. https://doi.org/10.1016/j.molliq.2018.06.106. in Journal of Molecular Liquids. 2018;266.
https://hdl.handle.net/21.15107/rcub_dais_3772 .

Troter, Dragan Z., Todorović, Zoran B., Đokić Stojanović, Dušica R., Veselinović, Ljiljana, Zdujić, Miodrag, Veljković, Vlada B., "Supplementary material for the article: Troter, D.Z., Todorović, Z.B., Đokić-Stojanović, D.R., Veselinović, L.M., Zdujić, M.V., Veljković, V.B., 2018. Choline chloride-based deep eutectic solvents in CaO-catalyzed ethanolysis of expired sunflower oil. Journal of Molecular Liquids 266, 557–567. https://doi.org/10.1016/j.molliq.2018.06.106" in Journal of Molecular Liquids, 266 (2018),
https://hdl.handle.net/21.15107/rcub_dais_3772 .

TY  - JOUR
AU  - Troter, Dragan Z.
AU  - Todorović, Zoran B.
AU  - Stojanović, Đokić
AU  - Đokić Stojanović, Dušica R.
AU  - Veselinović, Ljiljana
AU  - Zdujić, Miodrag
AU  - Veljković, Vlada B.
PY  - 2018
UR  - https://dais.sanu.ac.rs/123456789/3802
AB  - Choline chloride (ChCl)-based deep eutectic solvents (DESs) with different amides or polyols as hydrogen bond donors were tested as cosolvents in the ethanolysis of expired sunflower oil catalyzed by either calcined or non-calcined CaO. These cosolvents promoted the ethanolysis by a successful activation of non-calcined CaO, which was ascribed to the CaCO3 and Ca(OH)2 dissolution from the surface of the solid catalyst particles. With both calcined and non-calcined CaO, the polyol-based solvents gave higher fatty acid ethyl esters (FAEE) content than the amide-based solvents. Among the amide-based DESs, choline chloride:urea (ChCl:U) was the most efficient activator of non-calcined CaO. Choline chloride:ethylene glycol (ChCl:EG) and choline chloride:propylene glycol (ChCl:PG) were more efficient than choline chloride:glycerol (ChCl:G) even with non-calcined CaO. However, ChCl:G might be more suitable than the others since the use of glycerol, a by-product of the ethanolysis, could reduce the overall biodiesel production costs. FTIR and XRD analyses of the used and separated CaO were performed in order to get more insight into the catalytically active phase(s). Also, the mechanisms of the CaO activation in the presence of the DESs were considered. The phase separation of the reaction mixture was faster in the presence of the DESs. Since ChCl:U and ChCl:G DESs are nontoxic, biodegradable, biorenewable and “green” solvents and provide the elimination of the calcination step of CaO, thus reducing the overall process costs, the non-calcined CaO catalytic systems with these DESs are recommended for further optimization. © 2018 Elsevier B.V.
T2  - Journal of Molecular Liquids
T1  - Choline chloride-based deep eutectic solvents in CaO-catalyzed ethanolysis of expired sunflower oil
SP  - 557
EP  - 567
VL  - 266
DO  - 10.1016/j.molliq.2018.06.106
UR  - https://hdl.handle.net/21.15107/rcub_dais_3802
ER  - 

@article{
author = "Troter, Dragan Z. and Todorović, Zoran B. and Stojanović, Đokić and Đokić Stojanović, Dušica R. and Veselinović, Ljiljana and Zdujić, Miodrag and Veljković, Vlada B.",
year = "2018",
abstract = "Choline chloride (ChCl)-based deep eutectic solvents (DESs) with different amides or polyols as hydrogen bond donors were tested as cosolvents in the ethanolysis of expired sunflower oil catalyzed by either calcined or non-calcined CaO. These cosolvents promoted the ethanolysis by a successful activation of non-calcined CaO, which was ascribed to the CaCO3 and Ca(OH)2 dissolution from the surface of the solid catalyst particles. With both calcined and non-calcined CaO, the polyol-based solvents gave higher fatty acid ethyl esters (FAEE) content than the amide-based solvents. Among the amide-based DESs, choline chloride:urea (ChCl:U) was the most efficient activator of non-calcined CaO. Choline chloride:ethylene glycol (ChCl:EG) and choline chloride:propylene glycol (ChCl:PG) were more efficient than choline chloride:glycerol (ChCl:G) even with non-calcined CaO. However, ChCl:G might be more suitable than the others since the use of glycerol, a by-product of the ethanolysis, could reduce the overall biodiesel production costs. FTIR and XRD analyses of the used and separated CaO were performed in order to get more insight into the catalytically active phase(s). Also, the mechanisms of the CaO activation in the presence of the DESs were considered. The phase separation of the reaction mixture was faster in the presence of the DESs. Since ChCl:U and ChCl:G DESs are nontoxic, biodegradable, biorenewable and “green” solvents and provide the elimination of the calcination step of CaO, thus reducing the overall process costs, the non-calcined CaO catalytic systems with these DESs are recommended for further optimization. © 2018 Elsevier B.V.",
journal = "Journal of Molecular Liquids",
title = "Choline chloride-based deep eutectic solvents in CaO-catalyzed ethanolysis of expired sunflower oil",
pages = "557-567",
volume = "266",
doi = "10.1016/j.molliq.2018.06.106",
url = "https://hdl.handle.net/21.15107/rcub_dais_3802"
}

Troter, D. Z., Todorović, Z. B., Stojanović, Đ., Đokić Stojanović, D. R., Veselinović, L., Zdujić, M.,& Veljković, V. B.. (2018). Choline chloride-based deep eutectic solvents in CaO-catalyzed ethanolysis of expired sunflower oil. in Journal of Molecular Liquids, 266, 557-567.
https://doi.org/10.1016/j.molliq.2018.06.106
https://hdl.handle.net/21.15107/rcub_dais_3802

Troter DZ, Todorović ZB, Stojanović Đ, Đokić Stojanović DR, Veselinović L, Zdujić M, Veljković VB. Choline chloride-based deep eutectic solvents in CaO-catalyzed ethanolysis of expired sunflower oil. in Journal of Molecular Liquids. 2018;266:557-567.
doi:10.1016/j.molliq.2018.06.106
https://hdl.handle.net/21.15107/rcub_dais_3802 .

Troter, Dragan Z., Todorović, Zoran B., Stojanović, Đokić, Đokić Stojanović, Dušica R., Veselinović, Ljiljana, Zdujić, Miodrag, Veljković, Vlada B., "Choline chloride-based deep eutectic solvents in CaO-catalyzed ethanolysis of expired sunflower oil" in Journal of Molecular Liquids, 266 (2018):557-567,
https://doi.org/10.1016/j.molliq.2018.06.106 .,
https://hdl.handle.net/21.15107/rcub_dais_3802 .

TY  - JOUR
AU  - Troter, Dragan Z.
AU  - Todorović, Zoran B.
AU  - Đokić Stojanović, Dušica R.
AU  - Veselinović, Ljiljana
AU  - Zdujić, Miodrag
AU  - Veljković, Vlada B.
PY  - 2018
UR  - https://dais.sanu.ac.rs/123456789/3694
AB  - Choline chloride (ChCl)-based deep eutectic solvents (DESs) with different amides or polyols as hydrogen bond donors were tested as cosolvents in the ethanolysis of expired sunflower oil catalyzed by either calcined or non-calcined CaO. These cosolvents promoted the ethanolysis by a successful activation of non-calcined CaO, which was ascribed to the CaCO3 and Ca(OH)2 dissolution from the surface of the solid catalyst particles. With both calcined and non-calcined CaO, the polyol-based solvents gave higher fatty acid ethyl esters (FAEE) content than the amide-based solvents. Among the amide-based DESs, choline chloride:urea (ChCl:U) was the most efficient activator of non-calcined CaO. Choline chloride:ethylene glycol (ChCl:EG) and choline chloride:propylene glycol (ChCl:PG) were more efficient than choline chloride:glycerol (ChCl:G) even with non-calcined CaO. However, ChCl:G might be more suitable than the others since the use of glycerol, a by-product of the ethanolysis, could reduce the overall biodiesel production costs. FTIR and XRD analyses of the used and separated CaO were performed in order to get more insight into the catalytically active phase(s). Also, the mechanisms of the CaO activation in the presence of the DESs were considered. The phase separation of the reaction mixture was faster in the presence of the DESs. Since ChCl:U and ChCl:G DESs are nontoxic, biodegradable, biorenewable and “green” solvents and provide the elimination of the calcination step of CaO, thus reducing the overall process costs, the non-calcined CaO catalytic systems with these DESs are recommended for further optimization. © 2018 Elsevier B.V.
PB  - Elsevier
T2  - Journal of Molecular Liquids
T1  - Choline chloride-based deep eutectic solvents in CaO-catalyzed ethanolysis of expired sunflower oil
SP  - 557
EP  - 567
VL  - 266
DO  - 10.1016/j.molliq.2018.06.106
UR  - https://hdl.handle.net/21.15107/rcub_dais_3694
ER  - 

@article{
author = "Troter, Dragan Z. and Todorović, Zoran B. and Đokić Stojanović, Dušica R. and Veselinović, Ljiljana and Zdujić, Miodrag and Veljković, Vlada B.",
year = "2018",
abstract = "Choline chloride (ChCl)-based deep eutectic solvents (DESs) with different amides or polyols as hydrogen bond donors were tested as cosolvents in the ethanolysis of expired sunflower oil catalyzed by either calcined or non-calcined CaO. These cosolvents promoted the ethanolysis by a successful activation of non-calcined CaO, which was ascribed to the CaCO3 and Ca(OH)2 dissolution from the surface of the solid catalyst particles. With both calcined and non-calcined CaO, the polyol-based solvents gave higher fatty acid ethyl esters (FAEE) content than the amide-based solvents. Among the amide-based DESs, choline chloride:urea (ChCl:U) was the most efficient activator of non-calcined CaO. Choline chloride:ethylene glycol (ChCl:EG) and choline chloride:propylene glycol (ChCl:PG) were more efficient than choline chloride:glycerol (ChCl:G) even with non-calcined CaO. However, ChCl:G might be more suitable than the others since the use of glycerol, a by-product of the ethanolysis, could reduce the overall biodiesel production costs. FTIR and XRD analyses of the used and separated CaO were performed in order to get more insight into the catalytically active phase(s). Also, the mechanisms of the CaO activation in the presence of the DESs were considered. The phase separation of the reaction mixture was faster in the presence of the DESs. Since ChCl:U and ChCl:G DESs are nontoxic, biodegradable, biorenewable and “green” solvents and provide the elimination of the calcination step of CaO, thus reducing the overall process costs, the non-calcined CaO catalytic systems with these DESs are recommended for further optimization. © 2018 Elsevier B.V.",
publisher = "Elsevier",
journal = "Journal of Molecular Liquids",
title = "Choline chloride-based deep eutectic solvents in CaO-catalyzed ethanolysis of expired sunflower oil",
pages = "557-567",
volume = "266",
doi = "10.1016/j.molliq.2018.06.106",
url = "https://hdl.handle.net/21.15107/rcub_dais_3694"
}

Troter, D. Z., Todorović, Z. B., Đokić Stojanović, D. R., Veselinović, L., Zdujić, M.,& Veljković, V. B.. (2018). Choline chloride-based deep eutectic solvents in CaO-catalyzed ethanolysis of expired sunflower oil. in Journal of Molecular Liquids
Elsevier., 266, 557-567.
https://doi.org/10.1016/j.molliq.2018.06.106
https://hdl.handle.net/21.15107/rcub_dais_3694

Troter DZ, Todorović ZB, Đokić Stojanović DR, Veselinović L, Zdujić M, Veljković VB. Choline chloride-based deep eutectic solvents in CaO-catalyzed ethanolysis of expired sunflower oil. in Journal of Molecular Liquids. 2018;266:557-567.
doi:10.1016/j.molliq.2018.06.106
https://hdl.handle.net/21.15107/rcub_dais_3694 .

Troter, Dragan Z., Todorović, Zoran B., Đokić Stojanović, Dušica R., Veselinović, Ljiljana, Zdujić, Miodrag, Veljković, Vlada B., "Choline chloride-based deep eutectic solvents in CaO-catalyzed ethanolysis of expired sunflower oil" in Journal of Molecular Liquids, 266 (2018):557-567,
https://doi.org/10.1016/j.molliq.2018.06.106 .,
https://hdl.handle.net/21.15107/rcub_dais_3694 .