In a heterogeneous base methanolysis of vegetable oils one of the most important characteristics of the catalysts are the basicity and the availability of basic centers. The impact of these factors on the catalytic activity was investigated in the reaction of sunflower oil methanolysis by CaO/γ-Al2O3 catalyst. The particle morphology of CaO-dispersed onto γ-Al2O3 surface was analyzed by field emission scanning electron microscopy (FESEM), while basicity and basic strength of prepared catalysts were determined using Hammett indicators method. The results showed a strong dependance of catalytic activity on its basicity. The catalyst with the highest basicity was the most active, and decreasing basicity reduces activity of the catalyst. In addition, it was shown that the catalyst activity depends on the favorable spatial distribution of basic sites, i.e. of their availability.
Keywords:
Basicity and basic strength / Heterogeneous base methanolysis / Biodiesel / CaO / Gamma-alumina
Source:
Physical Chemistry 2016 – 13th International Conference on Fundamental and Applied Aspects of Physical Chemistry, 2016, 1, 227-230
TY - CONF
AU - Marinković, Dalibor
AU - Stanković, Miroslav
AU - Jovanović, Dušan M.
PY - 2016
UR - https://cer.ihtm.bg.ac.rs/handle/123456789/2892
AB - In a heterogeneous base methanolysis of vegetable oils one of the most important characteristics of the catalysts are the basicity and the availability of basic centers. The impact of these factors on the catalytic activity was investigated in the reaction of sunflower oil methanolysis by CaO/γ-Al2O3 catalyst. The particle morphology of CaO-dispersed onto γ-Al2O3 surface was analyzed by field emission scanning electron microscopy (FESEM), while basicity and basic strength of prepared catalysts were determined using Hammett indicators method. The results showed a strong dependance of catalytic activity on its basicity. The catalyst with the highest basicity was the most active, and decreasing basicity reduces activity of the catalyst. In addition, it was shown that the catalyst activity depends on the favorable spatial distribution of basic sites, i.e. of their availability.
PB - Society of Physical Chemists of Serbia
C3 - Physical Chemistry 2016 – 13th International Conference on Fundamental and Applied Aspects of Physical Chemistry
T1 - Effect of basicity on the catalytic performance of heterogeneous catalysts for biodiesel production
VL - 1
SP - 227
EP - 230
UR - https://hdl.handle.net/21.15107/rcub_cer_2892
ER -
@conference{
author = "Marinković, Dalibor and Stanković, Miroslav and Jovanović, Dušan M.",
year = "2016",
abstract = "In a heterogeneous base methanolysis of vegetable oils one of the most important characteristics of the catalysts are the basicity and the availability of basic centers. The impact of these factors on the catalytic activity was investigated in the reaction of sunflower oil methanolysis by CaO/γ-Al2O3 catalyst. The particle morphology of CaO-dispersed onto γ-Al2O3 surface was analyzed by field emission scanning electron microscopy (FESEM), while basicity and basic strength of prepared catalysts were determined using Hammett indicators method. The results showed a strong dependance of catalytic activity on its basicity. The catalyst with the highest basicity was the most active, and decreasing basicity reduces activity of the catalyst. In addition, it was shown that the catalyst activity depends on the favorable spatial distribution of basic sites, i.e. of their availability.",
publisher = "Society of Physical Chemists of Serbia",
journal = "Physical Chemistry 2016 – 13th International Conference on Fundamental and Applied Aspects of Physical Chemistry",
title = "Effect of basicity on the catalytic performance of heterogeneous catalysts for biodiesel production",
volume = "1",
pages = "227-230",
url = "https://hdl.handle.net/21.15107/rcub_cer_2892"
}
Marinković, D., Stanković, M.,& Jovanović, D. M.. (2016). Effect of basicity on the catalytic performance of heterogeneous catalysts for biodiesel production. in Physical Chemistry 2016 – 13th International Conference on Fundamental and Applied Aspects of Physical Chemistry
Society of Physical Chemists of Serbia., 1, 227-230.
https://hdl.handle.net/21.15107/rcub_cer_2892
Marinković D, Stanković M, Jovanović DM. Effect of basicity on the catalytic performance of heterogeneous catalysts for biodiesel production. in Physical Chemistry 2016 – 13th International Conference on Fundamental and Applied Aspects of Physical Chemistry. 2016;1:227-230.
https://hdl.handle.net/21.15107/rcub_cer_2892 .
Marinković, Dalibor, Stanković, Miroslav, Jovanović, Dušan M., "Effect of basicity on the catalytic performance of heterogeneous catalysts for biodiesel production" in Physical Chemistry 2016 – 13th International Conference on Fundamental and Applied Aspects of Physical Chemistry, 1 (2016):227-230,
https://hdl.handle.net/21.15107/rcub_cer_2892 .
,