文献类型：会议论文

英文题名：Ionic liquid [BMIm] [HSO4] as dual catalyst-solvent for the esterification of hexanoic acid with n-butanol

作者：Zeng, Qian[1];Song, Zhen[2];Qin, Hao[1];Cheng, Hongye[1];Chen, Lifang[1];Pan, Ming[3];Heng, Yi[3];Qi, Zhiwen[1]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, State Key Lab Chem Engn, Max Planck Partner Grp, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]Max Planck Inst Dynam Complex Tech Syst, Sandtorstr 1, D-39106 Magdeburg, Germany;[3]Sun Yat Sen Univ, Sch Chem Engn & Technol, 135 Xingang West Rd, Guangzhou 510275, Guangdong, Peoples R China

会议论文集：Chinese National Conference on Energy and Environmental Science and Technology (EEST)

会议日期：APR 06-09, 2018

会议地点：Beijing, PEOPLES R CHINA

语种：英文

外文关键词：[BMIm] [HSO4]; Ionic liquids; Butyl hexanoate; Esterification; Reactive extraction

摘要：Butyl hexanoate (BuHE) is currently synthesized through the Fischer esterification with mineral acid as catalyst, which suffers from the problems of side reaction, difficult recycling, and corrosion. To overcome these disadvantages, ionic liquid 1-butyl-3-methylimidazolium hydrogen sulfate ([BMIm][HSO4]) is employed as dual catalyst-solvent for the esterification of hexanoic acid (HeAc) with n-butanol (BuOH) in a reactive extraction process. The dual functions of [BMIm][HSO4], extraction and catalysis, were confirmed by liquid-liquid equilibria for the two systems {[BMIm][HSO4] + HeAc + BuHE} and {[BMIm][HSO4] + BuOH + BuHE}, and by the comparison of esterifications with or without [BMIm][HSO4], respectively. Moreover, the optimal reactive extraction conditions for BuHE formation were obtained. Finally, the possible mechanism of intensification of [BMIm][HSO4] on BuHE formation in reactive extraction process was proposed.