Calcium diglyceroxide synthesized by mechanochemical treatment, its characterization and application as catalyst for fatty acid methyl esters production
Abstract
In the present work, calcium diglyceroxide (CaDG) was synthesized by mechanochemical treatment of CaO dispersed in glycerol, and characterized by X-ray diffraction (XRD), thermal analysis (TGA/DTA), infrared spectroscopy (FTIR), and Hammett indicator method for base strength determination. The obtained CaDG was tested as a catalyst in the methanolysis of sunflower oil under different working conditions: catalyst amount, agitation speed, temperature and methanol to oil molar ratio. The main advantage of CaDG used as a catalyst in methanolysis is related to the initial rate of methanolysis. According to many previously reported data in literature the mass transfer resistance controls the overall rate of methanolysis, but it is not observed with CaDG used as catalyst. Recently developed kinetic model that describes the complex methanolysis process was successfully applied for this system and model parameters were determined, supporting the explanation of the physical effect of the CaDG ca...talyst on the reduction of mass transfer resistance and increasing the rate of methanolysis. The absence of mass transfer rate at the beginning of process is a consequence of the nature of the CaDG, which is adsorbed at the droplet interfaces between methanol and oil leading to the formation of fine dispersion of these two immiscible liquids.
Keywords:
biodiesel / calcium diglyceroxide / mechanochemical synthesis / kinetic model / mass transfer resistanceSource:
Fuel, 2016, 165, 159-165Publisher:
- Elsevier
Funding / projects:
DOI: 10.1016/j.fuel.2015.10.063
ISSN: 0016-2361
WoS: 000364655000019
Scopus: 2-s2.0-84946119804
Institution/Community
Институт техничких наука САНУ / Institute of Technical Sciences of SASATY - JOUR AU - Lukić, Ivana AU - Kesić, Željka AU - Zdujić, Miodrag AU - Skala, Dejan PY - 2016 UR - https://dais.sanu.ac.rs/123456789/2315 AB - In the present work, calcium diglyceroxide (CaDG) was synthesized by mechanochemical treatment of CaO dispersed in glycerol, and characterized by X-ray diffraction (XRD), thermal analysis (TGA/DTA), infrared spectroscopy (FTIR), and Hammett indicator method for base strength determination. The obtained CaDG was tested as a catalyst in the methanolysis of sunflower oil under different working conditions: catalyst amount, agitation speed, temperature and methanol to oil molar ratio. The main advantage of CaDG used as a catalyst in methanolysis is related to the initial rate of methanolysis. According to many previously reported data in literature the mass transfer resistance controls the overall rate of methanolysis, but it is not observed with CaDG used as catalyst. Recently developed kinetic model that describes the complex methanolysis process was successfully applied for this system and model parameters were determined, supporting the explanation of the physical effect of the CaDG catalyst on the reduction of mass transfer resistance and increasing the rate of methanolysis. The absence of mass transfer rate at the beginning of process is a consequence of the nature of the CaDG, which is adsorbed at the droplet interfaces between methanol and oil leading to the formation of fine dispersion of these two immiscible liquids. PB - Elsevier T2 - Fuel T1 - Calcium diglyceroxide synthesized by mechanochemical treatment, its characterization and application as catalyst for fatty acid methyl esters production SP - 159 EP - 165 VL - 165 DO - 10.1016/j.fuel.2015.10.063 UR - https://hdl.handle.net/21.15107/rcub_dais_2315 ER -
@article{ author = "Lukić, Ivana and Kesić, Željka and Zdujić, Miodrag and Skala, Dejan", year = "2016", abstract = "In the present work, calcium diglyceroxide (CaDG) was synthesized by mechanochemical treatment of CaO dispersed in glycerol, and characterized by X-ray diffraction (XRD), thermal analysis (TGA/DTA), infrared spectroscopy (FTIR), and Hammett indicator method for base strength determination. The obtained CaDG was tested as a catalyst in the methanolysis of sunflower oil under different working conditions: catalyst amount, agitation speed, temperature and methanol to oil molar ratio. The main advantage of CaDG used as a catalyst in methanolysis is related to the initial rate of methanolysis. According to many previously reported data in literature the mass transfer resistance controls the overall rate of methanolysis, but it is not observed with CaDG used as catalyst. Recently developed kinetic model that describes the complex methanolysis process was successfully applied for this system and model parameters were determined, supporting the explanation of the physical effect of the CaDG catalyst on the reduction of mass transfer resistance and increasing the rate of methanolysis. The absence of mass transfer rate at the beginning of process is a consequence of the nature of the CaDG, which is adsorbed at the droplet interfaces between methanol and oil leading to the formation of fine dispersion of these two immiscible liquids.", publisher = "Elsevier", journal = "Fuel", title = "Calcium diglyceroxide synthesized by mechanochemical treatment, its characterization and application as catalyst for fatty acid methyl esters production", pages = "159-165", volume = "165", doi = "10.1016/j.fuel.2015.10.063", url = "https://hdl.handle.net/21.15107/rcub_dais_2315" }
Lukić, I., Kesić, Ž., Zdujić, M.,& Skala, D.. (2016). Calcium diglyceroxide synthesized by mechanochemical treatment, its characterization and application as catalyst for fatty acid methyl esters production. in Fuel Elsevier., 165, 159-165. https://doi.org/10.1016/j.fuel.2015.10.063 https://hdl.handle.net/21.15107/rcub_dais_2315
Lukić I, Kesić Ž, Zdujić M, Skala D. Calcium diglyceroxide synthesized by mechanochemical treatment, its characterization and application as catalyst for fatty acid methyl esters production. in Fuel. 2016;165:159-165. doi:10.1016/j.fuel.2015.10.063 https://hdl.handle.net/21.15107/rcub_dais_2315 .
Lukić, Ivana, Kesić, Željka, Zdujić, Miodrag, Skala, Dejan, "Calcium diglyceroxide synthesized by mechanochemical treatment, its characterization and application as catalyst for fatty acid methyl esters production" in Fuel, 165 (2016):159-165, https://doi.org/10.1016/j.fuel.2015.10.063 ., https://hdl.handle.net/21.15107/rcub_dais_2315 .