文献类型：期刊文献

英文题名：Liquid-liquid equilibrium for the system of ionic liquid [BMIm][HSO4] catalysed isobutyl isobutyrate formation

作者：Zeng, Qian[1];Hu, Biao[1];Cheng, Hongye[1];Chen, Lifang[1];Huang, Junmei[2];Qi, Zhiwen[1]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, Max Planck Partner Grp, State Key Lab Chem Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]Shanghai Minhang Environm Monitoring Stn, Shanghai 201100, Peoples R China

年份：2018

卷号：122

起止页码：162

外文期刊名：JOURNAL OF CHEMICAL THERMODYNAMICS

收录：;EI(收录号：20181404970865);WOS:【SCI-EXPANDED(收录号:WOS:000432586900016)】；

基金：The financial support from Shanghai Science and Technology Committee (16dz1206203), National Natural Science Foundation of China (21776074) and 111 Project (B08021) is greatly acknowledged.

语种：英文

外文关键词：Liquid-liquid equilibria; Isobutyl isobutyrate; Ionic liquid; NRTL; sigma-Potential

摘要：Isobutyl isobutyrate is an important chemical which can be formed in a reactive extraction process with ionic liquid as dual solvent-catalyst. To design such an intensified process, the liquid-liquid equilibria (LLE) data for the esterification system involving ionic liquid are essential. In this work, the LLE of ternary systems {isobutyl isobutyrate (IBIBE) + isobutyric acid (IBAc) or isobutanol (IBOH) + 1-butyl-3-methylimidazolium hydrogen sulfate ([BMIm][HSO4])} and the quinary system {IBAc + IBOH + IBIBE + H2O + [BMIm][HSO4]} were measured at temperature T= (298.2, 323.2 and 353.2) K, T= (323.2, 333.2, 343.2 and 353.2) K and atmospheric pressure, respectively. Based on the experimental data, the solute distribution coefficient and the selectivity were determined, which confirms the feasibility of the ionic liquid for isobutyl isobutyrate formation. The phase behaviour was explained by the molecular interaction using sigma-potential analysis. Moreover, the binary parameters of the NRTL model for [BMIm][HSO4] catalysed isobutyl isobutyrate formation system were fitted. (C) 2018 Elsevier Ltd.