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| Esterification of oleic acid catalyzed by L-Aspartic acid ionic liquid combined with porcine pancreatic lipase |
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| DOI： |
| KeyWord:methyl oleate L-Aspartic acid ionic liquid lipase esterification reaction |
| FundProject: |
| Author Name | Affiliation | | ZHENG Li , WANG Wenwei,WANG Changmei, WANG Zhishan, XU Jinping, YIN Fang, YANG Bin, WU Kai, ZHAO Xingling, LIANG Chengyue, LIU Jing, YANG Hong, ZHANG Wudi | School of Energy and Environment Science, Yunnan Normal University, Kunming 650500, China |
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| Abstract: |
| In order to prepare biodiesel greenly and efficiently，L-Aspartic acid ionic liquid (\[Asp\]HSO4) combined with porcine pancreatic lipase was used to catalyze the esterification of oleic acid to prepare methyl oleate. The effects of reaction time, molar ratio of methanol to oleic acid, amount of \[Asp\]HSO4, amount of porcine pancreatic lipase, and the reaction temperature on the conversion rate were investigated by single factor experiment.Then the esterification process conditions were optimized by orthogonal experiment as follows: amount of \[Asp\]HSO4 6%, molar ratio of methanol to oleic acid 5.5∶1, amount of porcine pancreatic lipase 4%, reaction time 21 h, and reaction temperature 45℃. The conversion rate could reach 91.91% under the optimal conditions.\[Asp\]HSO4can reduce the effects of methanol and temperature on the catalytic activity of porcine pancreatic lipase,and has synergistic effect on the esterification of oleic acid catalyzed by porcine pancreatic lipase. |
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