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(英文)

• 作 者: 蔡双飞 王利生
• 机 构: School of Chemical Engineering and Environment,Beijing Institute of Technology,
• 出 处: Chinese Journal of Chemical Engineering
• 发表日期: 2011年01期
• 关键词: 离子液体催化 acetic 脂肪酸甲酯 kinetics unsaturated 环氧化 thermodynamics peroxide esters hydr

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.

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. 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. 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.