Molar Surface Gibbs Energy of the Aqueous Solution of Ionic Liquid[C4mim] [OAc]

doi:10.1007/s40242-017-6386-5

Abstract

Abstract:

The values of density and surface tension for aqueous solution of ionic liquid(IL) 1-butyl-3-methylimidazolium acetate([C₄mim] [OAc]) with various molalities were measured in the range of 288.15-318.15 K at intervals of 5 K. On the basis of thermodynamics, a semi-empirical model-molar surface Gibbs energy model of the ionic liquid solution that could be used to predict the surface tension or molar volume of solutions was put forward. The predicted values of the surface tension for aqueous[C₄mim] [OAc] and the corresponding experimental ones were highly correlated and extremely similar. In terms of the concept of the molar Gibbs energy, a new Eötvös equation was obtained and each parameter of the new equation has a clear physical meaning.

Key words: Ionic liquid, Aqueous solution, Molar surface Gibbs energy, Density, Surface tension

TONG Jing, ZHENG Xu, TONG Jian, QU Ye, LIU Lu, LI Hui. Molar Surface Gibbs Energy of the Aqueous Solution of Ionic Liquid[C₄mim] [OAc][J]. Chemical Research in Chinese Universities, 2017, 33(5): 828-832.

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Molar Surface Gibbs Energy of the Aqueous Solution of Ionic Liquid[C₄mim] [OAc]

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