| 磺酸功能化离子液体催化不饱和脂肪酸甲酯的环氧化研究 |
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| 引用本文： | 蔡双飞,王利生.磺酸功能化离子液体催化不饱和脂肪酸甲酯的环氧化研究[J].中国化学工程学报,2011,19(1):57-63. |
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| 作者姓名： | 蔡双飞 王利生 |
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| 作者单位： | School of Chemical Engineering and Environment, Beijing Institute of Technology, Beijing 100081, China |
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| 摘 要： | The epoxidation of unsaturated fatty acid methyl esters(FAMEs)by peroxyacetic acid generated in situ from hydrogen peroxide and acetic acid was studied in the presence of SO3H-functional Brnsted acidic ionic liquid (IL)C3SO3HMIM]HSO4]as catalyst.The effects of hydrogen peroxide/ethylenic unsaturation ratio,acetic acid concentration,IL concentration,recycling of the IL catalyst,and temperature on the conversion to oxirane were studied.The kinetics and thermodynamics of unsaturated FAMEs epoxidation and the kinetics of oxirane cleavage of the epoxidized FAMEs by acetic acid were also studied.The conversion of ethylenic unsaturation group to oxirane, the reaction rate of the conversion to oxirane,and the rate of hydrolysis(oxirane cleavage)were higher by using the IL catalyst.
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| 关 键 词： | in situ epoxidation kinetics oxirane cleavage unsaturated fatty acid methyl esters Brφnsted acidic ionic liquids |
| 收稿时间： | 2010-9-7 |
| 修稿时间： | 2011-1-7
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Epoxidation of unsaturated fatty acid methyl esters in the presence of SO3H-functional Brønsted acidic ionic liquid as catalyst |
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| CAI Shuangfei,WANG Lisheng.Epoxidation of unsaturated fatty acid methyl esters in the presence of SO3H-functional Brønsted acidic ionic liquid as catalyst[J].Chinese Journal of Chemical Engineering,2011,19(1):57-63. |
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| Authors: | CAI Shuangfei WANG Lisheng |
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| Affiliation: | School of Chemical Engineering and Environment, Beijing Institute of Technology, Beijing 100081, China |
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| Abstract: | The epoxidation of unsaturated fatty acid methyl esters (FAMEs) by peroxyacetic acid generated in situ from hydrogen peroxide and acetic acid was studied in the presence of SO3H-functional Brønsted acidic ionic liquid (IL) C3SO3HMIM]HSO4] as catalyst. The effects of hydrogen peroxide/ethylenic unsaturation ratio, acetic acid concentration, IL concentration, recycling of the IL catalyst, and temperature on the conversion to oxirane were studied. The kinetics and thermodynamics of unsaturated FAMEs epoxidation and the kinetics of oxirane cleavage of the epoxidized FAMEs by acetic acid were also studied. The conversion of ethylenic unsaturation group to oxirane, the reaction rate of the conversion to oxirane, and the rate of hydrolysis (oxirane cleavage) were higher by using the IL catalyst. |
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| Keywords: | in situ epoxidation kinetics oxirane cleavage unsaturated fatty acid methyl esters Brø nsted acidic ionic liquids |
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