文献类型：期刊文献

英文题名：Br?nsted acidic ionic liquid-catalyzed and ultrasound-promoted transesterification of fish oil with ethanol

作者：Cao, Piao[1]; Zheng, Lin[1]; Sun, Weizhen[1]; Zhao, Ling[1,2]

机构：[1] State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai, China; [2] School of Chemistry & Chemical Engineering, XinJiang University, Urumqi, China

年份：2022

卷号：100

期号：12

起止页码：3717

外文期刊名：Canadian Journal of Chemical Engineering

收录：EI(收录号：20220811700253)

语种：英文

外文关键词：Catalyst activity - Emulsification - Esters - Ethanol - Fatty acids - Molecular dynamics - Reaction kinetics - Transesterification - Ultrasonics

摘要：Four typical Br?nsted acidic ionic liquids (BILs) and concentrated sulphuric acid (H2SO4) were used to catalyze the transesterification of fish oil with ethanol to produce fatty acid ethyl ester (FAEE) in this work. The experimental results show that the imidazole BILs lead to fewer side reactions and higher product quality than H2SO4. Molecular dynamics (MD) simulations indicate that [PSMim][HSO4] molecules can be enriched at the interface and enhance the contact of eicosapentaenoic acid triglyceride (EPATG, a typical component of fish oil) and ethanol. And ester groups of EPATG tend to expose more to ethanol in the BILs system, which facilitates the occurrence of transesterification. However, H2SO4 has no positive effect on the distribution of the two reactants. For the transesterification, the interfacial property affects the catalytic activity a lot, instead of catalyst acidity. Also, the reaction rate is accelerated, obviously, by ultrasound-led liquid–liquid phase emulsification. ? 2021 Canadian Society for Chemical Engineering.