Influence of sulfate-based anion ionic liquids on the separation factor of the binary azeotropic system acetone plus methanol

被引：19
|
作者：
Matsuda, Hiroyuki [1 ]
Liebert, Vincent [2 ]
Tochigi, Katsumi [1 ]
Gmehling, Juergen [2 ]
机构：
[1] Nihon Univ, Dept Mat & Appl Chem, Chiyoda Ku, Tokyo 1018308, Japan
[2] Carl von Ossietzky Univ Oldenburg, D-26111 Oldenburg, Germany
来源：
FLUID PHASE EQUILIBRIA | 2013年 / 340卷
关键词：
Ionic liquids; Vapor-liquid equilibria; Headspace gas chromatography; Entrainer; Separation factor; BATCH EXTRACTIVE DISTILLATION; EQUILIBRIUM DATA; EXCESS PROPERTIES; PHASE-EQUILIBRIA; LITHIUM-NITRATE; SOLVENT; PRESSURE; WATER; KPA; OPTIMIZATION;
D O I：
10.1016/j.fluid.2012.12.006
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Two sulfate-based anion ionic liquids: 1-ethyl-3-methylimidazolium hydrogen sulfate [EMIM](+)[HSO4](-) and 1-ethyl-3-methylimidazolium methyl sulfate [EMIM]+[MeSO4](-) were investigated as entrainer candidates for the separation of the binary azeotropic system acetone + methanol. Vapor-liquid equilibria (VLE) for the binary system acetone + methanol and the ternary mixtures with these sulfate-based anion ionic liquids were measured by headspace gas chromatography. From the experimental VLE data, the influence of the ionic liquid on the separation factors was investigated. The experimental results for the ternary systems show that the two ionic liquids investigated enhance the separation factor of the binary system acetone + methanol. The calculated separation factors of the two ionic liquids for the binary system acetone + methanol were compared with those of the ionic liquid hexylpyridinium bis(trifluoromethylsulfonyl)imide [HPY](+)[BTI](-), and the conventional organic entrainers: ethylene glycol and water. (C) 2012 Elsevier B.V. All rights reserved.
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页码：27 / 30
页数：4
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