文献类型：期刊文献

英文题名：Bifunctional imidazole-PTSA deep eutectic solvent for synthesizing long-chain ester IBIBE in reactive extraction

作者：Qin, Hao[1];Song, Zhen[1];Zeng, Qian[1];Cheng, Hongye[1];Chen, Lifang[1];Qi, Zhiwen[1]

机构：[1]East China Univ Sci & Technol, Max Planck Partner Grp, State Key Lab Chem Engn, Sch Chem Engn, Shanghai 200237, Peoples R China

年份：2019

卷号：65

期号：2

起止页码：675

外文期刊名：AICHE JOURNAL

收录：;EI(收录号：20185006232047);WOS:【SCI-EXPANDED(收录号:WOS:000459660200020)】；

基金：The financial support from National Natural Science Foundation of China (21776074 and 21576081), and Higher School Discipline Innovation Program (111 Project B08021) are greatly acknowledged.

语种：英文

外文关键词：long-chain ester; acid-base tunable deep eutectic solvent; reactive extraction; phase diagram; COSMO-RS

摘要：The traditional production of long-chain organic esters like isobutyl isobutyrate (BIBE) suffers from severe problems due to the homogenous catalyst in process and complex system thermodynamics. In this work, an innovative bifunctional deep eutectic solvent (DES) is introduced, playing as both reaction catalyst and extraction solvent, to intensify the esterification process. The DES was formed by imidazole (Im) and p-toluenesulfonic acid (PTSA), which was for the first time found acid-base tunable, represented by weak basic DES [3Im:PTSA] and strong acidic DES [Im:2PTSA]. The formation mechanisms of [3Im:PTSA] and [Im:2PTSA] were illustrated by Fourier-transform infrared spectroscopy (FTIR) and COnductor-like Screening MOdel for Real Solvent (COSMO-RS) combined with the Im-PTSA phase diagram. The dual functions of the acidic [Im:2PTSA] in reactive extraction were evaluated by sigma-potential analysis and esterification experiments. The high conversion, easy product separation, and good solvent reusability confirm the excellent catalytic and solvent effect of [Im:2PTSA]. (c) 2018 American Institute of Chemical Engineers AIChE J, 65: 675-683, 2019