Extension of the UNIFAC Model for Ionic Liquids

被引：138

作者：

Lei, Zhigang ^{[1
]}

Dai, Chengna ^{[1
]}

Liu, Xing ^{[1
]}

Xiao, Li ^{[1
]}

Chen, Biaohua ^{[1
]}

机构：

[1] Beijing Inst Chem Technol, State Key Lab Chem Resource Engn, Beijing 100029, Peoples R China

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2012年 / 51卷 / 37期

关键词：

INFINITE DILUTION MEASUREMENTS; ACTIVITY-COEFFICIENTS; ORGANIC SOLUTES; THERMODYNAMIC PROPERTIES; COSMO-RS; ALKYL BENZENES; BINARY-SYSTEMS; 4-METHYL-N-BUTYLPYRIDINIUM TETRAFLUOROBORATE; BIS(TRIFLUOROMETHYLSULFONYL) IMIDE; EXCESS-ENTHALPIES;

D O I：

10.1021/ie301159v

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The UNIFAC model has recently become very popular for ionic liquids (ILs) because of its applicability for prediction of thermodynamic properties. This work is a continuation of our studies on the extension of group parameters of the UNIFAC model to systems with ILs. The new IL groups for 33 main groups and 53 subgroups were added into the current UNIFAC parameter matrix. The parameters of group surface area and volume for ILs were obtained by the COSMO calculation, while the group binary interaction parameters, a(nm) and a(mn), were obtained by means of correlating the activity coefficients of solutes at infinite dilution in ILs at different temperatures exhaustively collected from literature by the end of 2011. The predicted results of UNIFAC model are more accurate than those of the COSMO-RS model so that it can be used for identifying the general relationship between molecular structure of ILs and separation performance for the separation of liquid mixtures with ILs.

引用

页码：12135 / 12144

页数：10

共 127 条

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