Activity coefficients at infinite dilution of various solutes in the ionic liquids [MMIM]+[CH3SO4]-, [MMIM]+[CH3OC2H4SO4]-, [MMIM]+[(CH3)2PO4]-, [C5H5NC2H5]+[(CF3SO2)2N]- and [C5H5NH]+[C2H5OC2H4OSO3]-

被引：187

作者：

Kato, R ^{[1
]}

Gmehling, J ^{[1
]}

机构：

[1] Carl Von Ossietzky Univ Oldenburg, D-26111 Oldenburg, Germany

来源：

FLUID PHASE EQUILIBRIA | 2004年 / 226卷

关键词：

ionic liquids; infinite dilution activity coefficients; selectivities; measurement; dilutor technique;

D O I：

10.1016/j.fluid.2004.08.039

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Infinite dilution activity coefficients y(i)(infinity) have been measured for various solutes (alkanes. alkenes. cycloalkanes, cycloalkenes. aromatics. alcohols, ketones, esters, ethers, and water) in the five ionic liquids 1-methyl-3-methyl-imidazolium methylsulfate [MMIM](+)[CH3SO4](-). 1-methyl-3-methyl-imidazolium methoxyethylsulfate [MMIM](+)[CH3OC2H4SO4](-). 1-methyl-3-methyl-imidazolium dimethylphosphate [MMIM](+)[(CH3)=PO4](-), N-ethylpyridinium bis(trifluoromethylsulfonyl) imide [C5H5NC2H5](+)[(CF3SO2)(2)N](-), and pyridiniumethoxyethylsulfate [C5H5NH](+)[C2H5OC2H4OSO3](-) in the temperature range from 303.15 to 373.15 K. Additionally. densities of the investigated ionic liquids were measured in the temperature range from 293.15 to 353.15 K. Using all available gamma(i)(infinity)-data, the selectivities S-ij(infinity)= gamma(i)(infinity)/gamma(i)(infinity) and the capacities k(i)(infinity) = 1/gamma(i)(infinity) at infinite dilution were determined for different separation problems not only for ionic liquids, but also N-methyl-2-pyrrolidone (NMP) and ethylene glycol. (C) 2004 Elsevier B.V All rights reserved.

引用

页码：37 / 44

页数：8

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