Thermodynamic study of binary mixtures containing 1-butylpyridinium tetrafluoroborate and methanol, or ethanol

被引：30

作者：

Garcia-Mardones, M. ^{[1
]}

Perez-Gregorio, V. ^{[1
]}

Guerrero, H. ^{[1
]}

Bandres, I. ^{[1
]}

Lafuente, C. ^{[1
]}

机构：

[1] Univ Zaragoza, Fac Ciencias, Dept Quim Organ Quim Fis, E-50009 Zaragoza, Spain

来源：

JOURNAL OF CHEMICAL THERMODYNAMICS | 2010年 / 42卷 / 12期

关键词：

Alkanol; Ionic liquid; Thermophysical properties; (Vapour plus liquid) equilibrium; TEMPERATURE IONIC LIQUIDS; 1-BUTYL-3-METHYLPYRIDINIUM TETRAFLUOROBORATE; 1-BUTYL-2-METHYLPYRIDINIUM TETRAFLUOROBORATE; PHYSICOCHEMICAL PROPERTIES; DICYANAMIDE ANION; VAPOR-PRESSURES; HEAT-CAPACITY; MOLAR VOLUMES; PLUS ETHANOL; 323.15; K;

D O I：

10.1016/j.jct.2010.07.014

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Densities and speeds of sound have been determined for the binary mixture (1-butylpyridinium tetrafluoroborate + methanol, or ethanol) over the temperature range 293.15 K to 323.15 K. From experimental values, excess volume and excess isentropic compressibility have been calculated. The mixtures give negative values for the excess properties. Besides, (vapour + liquid) equilibrium in isothermal conditions has been obtained for these systems at T = 303.15 K and T = 323.15 K, which has allowed us to derive activity coefficients and excess Gibbs functions. Positive deviations from Raoult's law have been found. A detailed analysis and interpretation of results have been carried out in structural and energetic terms using thermodynamic information of the pure compounds. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：1500 / 1505

页数：6

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