Influence of various cosolvents on the calcium oxide-catalyzed ethanolysis of sunflower oil
| Autor: | Dragan Z. Troter, Miodrag Zdujić, Ljiljana Veselinović, Zoran B. Todorović, Dragan Manojlović, Vlada B. Veljković, Olivera S. Stamenković, Dušica R. Đokić-Stojanović |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
cosolvents
Diethanolamine Ethylene food.ingredient 010402 general chemistry 01 natural sciences lcsh:Chemistry chemistry.chemical_compound food medicine Triethylamine Heterogeneous catalysis Sunflower oil General Chemistry Transesterification Fatty acid ethyl esters 0104 chemical sciences transesterification Hexane heterogeneous catalysis chemistry lcsh:QD1-999 Triethanolamine Cosolvents fatty acid ethyl esters Ethylene glycol Nuclear chemistry medicine.drug |
| Zdroj: | Journal of the Serbian Chemical Society, Vol 84, Iss 3, Pp 253-265 (2019) Journal of the Serbian Chemical Society |
| ISSN: | 1820-7421 0352-5139 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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