EQUILIBRIUM IN BIPHASIC AQUEOUS SYSTEMS - A MODEL FOR THE EXCESS GIBBS ENERGY AND DATA FOR THE SYSTEM H2O-NACL-1-PROPANOL AT 25-DEGREES-C

被引：36

作者：

CHELUGET, EL ^{[1
]}

MARX, S ^{[1
]}

WEBER, ME ^{[1
]}

VERA, JH ^{[1
]}

机构：

[1] MCGILL UNIV,DEPT CHEM ENGN,MONTREAL H3A 2A7,QUEBEC,CANADA

来源：

JOURNAL OF SOLUTION CHEMISTRY | 1994年 / 23卷 / 02期

关键词：

LIQUID-LIQUID EQUILIBRIUM; AQUEOUS 2-PHASE SYSTEMS; MIXED-SOLVENTS; EXCESS GIBBS ENERGY MODEL;

D O I：

10.1007/BF00973551

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Liquid-liquid equilibrium data were measured for the 1-propanol-NaCl-H2O system at 25-degrees-C. Liquid-liquid equilibrium in aqueous biphasic salt systems containing salts and alcohols or polymers was modelled using an expression for the excess Gibbs energy of the solution. The model is based on modified forms of the nonprimitive Mean Spherical Approximation, the Bromley equation, and the Flory-Huggins theory and requires three and five adjustable parameters for ternary and quaternary systems, respectively. The model accurately correlated binary water-polymer or water-alcohol vapor-liquid equilibrium data and liquid-liquid equilibrium data for seven ternary and three quaternary aqueous biphasic salt systems.

引用

页码：275 / 305

页数：31

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