Alkoxyl side‐chain effects of acidic ionic liquids catalysts for the esterification of n‐butyl butyrate. (19th March 2021)

• Record Type: Journal Article
• Authors: Feng, Xiantao; Wang, Qiannan; Wang, Mengyang; Liu, Liang
• Is Part Of: Canadian journal of chemical engineering. Volume 100:Number 1(2022)
• Page Start: 125
• Page End: 130
• Publication Date: 2021-03-19
• Subjects: butyl butyrate -- catalysis -- esterification -- ionic liquid -- separation; Chemical engineering -- Periodicals; Technology -- Periodicals; 660.05
• DOI: 10.1002/cjce.24073
• Languages: English
• ISSNs: 0008-4034

Abstract

Abstract: Three kinds of alkoxy group‐functionalized acidic ionic liquids (ILs) are reported in this work, namely, 1‐(methoxyethyl)‐3‐methylimidazolium hydrogen sulphate [MOE‐MIM]HSO4, 1‐(ethyoxyethyl)‐3‐methylimidazolium hydrogen sulphate [EOE‐MIM]HSO4, and 1‐(propyoxyethyl)‐3‐methylimidazolium hydrogen sulphate [POE‐MIM]HSO4 . The short side chain on the cation of [MOE‐MIM]HSO4 decreases the solubility of the IL in butanol and butyric acid and facilitates the separation of the IL from a reaction medium. The yield of butyl butyrate is up to 99.5%. After 10 rounds of recycling, the catalytic performance of [MOE‐MIM]HSO4 shows no significant changes. Abstract : Three kinds of Alkoxyl side‐chain containing acidic ionic liquids are used to catalyze the esterification of butyl butyrate. The shorter side chain on the cation of [MOE‐MIM]HSO4 makes it less soluble in butanol and butyric acid, and easier separation from the reaction medium. The yield of the butyl butyrate is up to 99.5%. After reuse for 10 times, the catalytic activity of [MOE‐MIM]HSO4 shows no significant changes.