文献类型：期刊文献

英文题名：Promoting the sulfuric acid catalyzed isobutane alkylation by quaternary ammonium ionic liquids

作者：Cao, Piao[1];Yuan, Yuan[1];Huang, Chizhou[1];Sun, Weizhen[1];Zhao, Ling[1,2]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]XinJiang Univ, Sch Chem & Chem Engn, Urumqi, Peoples R China

年份：2020

卷号：66

期号：8

外文期刊名：AICHE JOURNAL

收录：;EI(收录号：20202008665795);WOS:【SCI-EXPANDED(收录号:WOS:000532823000001)】；

基金：National Natural Science Foundation of China, Grant/Award Number: 91434108

语种：英文

外文关键词：catalysis; ionic liquids; molecular; simulation

摘要：Seven typical quaternary ammonium ionic liquids, amino acid ionic liquids, and imidazolium ionic liquids were synthesized, characterized, and investigated as co-catalyst for the sulfuric acid catalyzed isobutane alkylation. The results show that the introduction of [OPSIm][HSO4] or [Pr3NPS][HSO4] both leads to a better catalytic performance and higher quality of alkylate products. The molecular dynamic simulation indicates that the [OPSIm][HSO4] can promote the dissolution of isobutane molecules at interface, further improving the ratio of isobutane to olefin from 1.02 to 1.18. Differently, the [Pr3NPS][HSO4] can significantly increase the interface width from 0.66 to 0.97 nm and reduce the interface tension from 28.49 to 14.62 mN/m, thereby enhancing the reaction area and improving the ion transfer. The [Pro][HSO4] and [Gly][HSO4] result in a worse quality of alkylate products due to no positive effect on the interfacial properties such as interfacial solubility of isobutane.