Heat capacities and excess enthalpies of 1-ethyl-3-methylimidazolium-based ionic liquids and water

被引：135

作者：

Ficke, Lindsay E. ^{[1
]}

Rodriguez, Hector ^{[1
]}

Brennecke, Joan F. ^{[1
]}

机构：

[1] Univ Notre Dame, Dept Chem & Biomol Engn, Notre Dame, IN 46556 USA

来源：

JOURNAL OF CHEMICAL AND ENGINEERING DATA | 2008年 / 53卷 / 09期

关键词：

D O I：

10.1021/je800248w

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Heat capacities and excess enthalpies were determined for three different binary water + ionic liquid systems, from (283.15 to 348-15) K, and covering the entire composition range. Specifically, the three completely water-miscible ionic liquids used were 1-ethyl-3-methylimidazolium ethylsulfate, 1-ethyl-3-methylimidazolium trifluoromethanesulfonate, and 1-ethyl-3-methylimidazolium trifluoroacetate. The influence of temperature and composition was assessed, and suitable equations, were used to correlate the experimental data. In addition, it was found that 1-ethyl-3-methylimidazolium ethylsulfate decomposes in the presence of water to form 1-ethyl-3-methylimidazolium hydrogen sulfate and ethanol under ambient conditions.

引用

页码：2112 / 2119

页数：8

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