Osmotic coefficients of binary mixtures of 1-butyl-3-methylimidazolium methylsulfate and 1,3-dimethylimidazolium methylsulfate with alcohols at T=323.15 K

被引：22

作者：

Calvar, Noelia ^{[1
]}

Gonzalez, Begona ^{[2
]}

Dominguez, Angeles ^{[2
]}

Macedo, Eugenia A. ^{[1
]}

机构：

[1] Univ Porto, Fac Engn, Dept Engn Quim, Lab Separat & React Engn, P-4200465 Oporto, Portugal

[2] Univ Vigo, Dept Ingn Quim, Vigo 36200, Spain

来源：

JOURNAL OF CHEMICAL THERMODYNAMICS | 2009年 / 41卷 / 05期

关键词：

Osmotic coefficients; Activity; Vapour pressure osmometry; Ionic liquids; VAPOR-LIQUID-EQUILIBRIA; THERMODYNAMIC PROPERTIES; PROTIC SOLVENTS; IONIC LIQUIDS; DIFFERENT TEMPERATURES; AQUEOUS-SOLUTIONS; LITHIUM BROMIDE; PRESSURES; ETHANOL; SYSTEM;

D O I：

10.1016/j.jct.2008.12.021

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Measurements of osmotic coefficients of BMimMSO(4) (1-butyl-3-methylimidazolium methylsulfate) and MMimMSO(4) (1,3-dimethylimidazolium methylsulfate) with ethanol, 1-propanol, and 2-propanol at T = 323.15 K are reported in this work. Vapour pressure and activity values for the binary systems studied are obtained from experimental results. The osmotic coefficients are correlated using the extended Pitzer model modified by Archer and the modified NRTL (MNRTL) model. The standard deviations obtained with both models are lower than 0.013 and 0.060, respectively. The parameters obtained with the extended Pitzer model of Archer are used to calculate the mean molal activity coefficients and the excess Gibbs free energy of the binary mixtures. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：617 / 622

页数：6

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