Assessment of CaTiO3, CaMnO3, CaZrO3 and Ca2Fe2O5 perovskites as heterogeneous base catalysts for biodiesel synthesis
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2016
Authors
Kesić, Željka
Lukić, Ivana
Zdujić, Miodrag

Jovalekić, Čedomir

Veljković, Vlada B.

Skala, Dejan

Article (Published version)

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Calcium-containing perovskites CaTiO3, CaMnO3, CaZrO3 and Ca2Fe2O5 were synthesized by calcination of mechanochemically treated stoichiometric mixtures of CaCO3 and either TiO2, MnO2, ZrO2 or Fe2O3 powders. X-ray diffraction analysis revealed a pure single perovskite phase for all four samples after calcination. This study proved that the pure perovskite phase exhibited low or no catalytic activity at 60 °C for the methanolysis of sunflower oil. However, at 165 °C FAME yield of more than 90% was reached after 2 h using CaTiO3, CaMnO3 and CaZrO3 as catalyst. Contrary to inactive pure perovskites at 60 °C, the CaTiO3 and Ca2Fe2O5 samples containing a very small amount of “free” CaO also showed methanolysis activity at 60 °C. This fact can be used to explain some contradictory statements reported in literature related to the perovskites as catalyst for biodiesel synthesis at mild temperatures.
Keywords:
Biodiesel / Transesterification / Perovskites / Catalytic activity / Calcium oxidSource:
Fuel Processing Technology, 2016, 143, 162-168Publisher:
- Elsevier
Projects:
DOI: 10.1016/j.fuproc.2015.11.018
ISSN: 0378-3820
WoS: 000369455300018
Scopus: 2-s2.0-84949634722
TY - JOUR AU - Kesić, Željka AU - Lukić, Ivana AU - Zdujić, Miodrag AU - Jovalekić, Čedomir AU - Veljković, Vlada B. AU - Skala, Dejan PY - 2016 UR - http://dais.sanu.ac.rs/123456789/2363 AB - Calcium-containing perovskites CaTiO3, CaMnO3, CaZrO3 and Ca2Fe2O5 were synthesized by calcination of mechanochemically treated stoichiometric mixtures of CaCO3 and either TiO2, MnO2, ZrO2 or Fe2O3 powders. X-ray diffraction analysis revealed a pure single perovskite phase for all four samples after calcination. This study proved that the pure perovskite phase exhibited low or no catalytic activity at 60 °C for the methanolysis of sunflower oil. However, at 165 °C FAME yield of more than 90% was reached after 2 h using CaTiO3, CaMnO3 and CaZrO3 as catalyst. Contrary to inactive pure perovskites at 60 °C, the CaTiO3 and Ca2Fe2O5 samples containing a very small amount of “free” CaO also showed methanolysis activity at 60 °C. This fact can be used to explain some contradictory statements reported in literature related to the perovskites as catalyst for biodiesel synthesis at mild temperatures. PB - Elsevier T2 - Fuel Processing Technology T1 - Assessment of CaTiO3, CaMnO3, CaZrO3 and Ca2Fe2O5 perovskites as heterogeneous base catalysts for biodiesel synthesis SP - 162 EP - 168 VL - 143 DO - 10.1016/j.fuproc.2015.11.018 ER -
@article{ author = "Kesić, Željka and Lukić, Ivana and Zdujić, Miodrag and Jovalekić, Čedomir and Veljković, Vlada B. and Skala, Dejan", year = "2016", url = "http://dais.sanu.ac.rs/123456789/2363", abstract = "Calcium-containing perovskites CaTiO3, CaMnO3, CaZrO3 and Ca2Fe2O5 were synthesized by calcination of mechanochemically treated stoichiometric mixtures of CaCO3 and either TiO2, MnO2, ZrO2 or Fe2O3 powders. X-ray diffraction analysis revealed a pure single perovskite phase for all four samples after calcination. This study proved that the pure perovskite phase exhibited low or no catalytic activity at 60 °C for the methanolysis of sunflower oil. However, at 165 °C FAME yield of more than 90% was reached after 2 h using CaTiO3, CaMnO3 and CaZrO3 as catalyst. Contrary to inactive pure perovskites at 60 °C, the CaTiO3 and Ca2Fe2O5 samples containing a very small amount of “free” CaO also showed methanolysis activity at 60 °C. This fact can be used to explain some contradictory statements reported in literature related to the perovskites as catalyst for biodiesel synthesis at mild temperatures.", publisher = "Elsevier", journal = "Fuel Processing Technology", title = "Assessment of CaTiO3, CaMnO3, CaZrO3 and Ca2Fe2O5 perovskites as heterogeneous base catalysts for biodiesel synthesis", pages = "162-168", volume = "143", doi = "10.1016/j.fuproc.2015.11.018" }
Kesić Ž, Lukić I, Zdujić M, Jovalekić Č, Veljković VB, Skala D. Assessment of CaTiO3, CaMnO3, CaZrO3 and Ca2Fe2O5 perovskites as heterogeneous base catalysts for biodiesel synthesis. Fuel Processing Technology. 2016;143:162-168
Kesić, Ž., Lukić, I., Zdujić, M., Jovalekić, Č., Veljković, V. B.,& Skala, D. (2016). Assessment of CaTiO3, CaMnO3, CaZrO3 and Ca2Fe2O5 perovskites as heterogeneous base catalysts for biodiesel synthesis. Fuel Processing TechnologyElsevier., 143, 162-168. https://doi.org/10.1016/j.fuproc.2015.11.018
Kesić Željka, Lukić Ivana, Zdujić Miodrag, Jovalekić Čedomir, Veljković Vlada B., Skala Dejan, "Assessment of CaTiO3, CaMnO3, CaZrO3 and Ca2Fe2O5 perovskites as heterogeneous base catalysts for biodiesel synthesis" 143 (2016):162-168, https://doi.org/10.1016/j.fuproc.2015.11.018 .