Phase equilibrium in the system of water, alcohol or ketone, and sodium chloride

被引：12

作者：

Jurkiewicz, Kazimierz ^{[1
]}

机构：

[1] Marie Curie Sklodowska Univ, Fac Chem, Dept Interfacial Phenomena, PL-20031 Lublin, Poland

来源：

FLUID PHASE EQUILIBRIA | 2007年 / 251卷 / 01期

关键词：

three-component system; water-organic solvent-inorganic salt; salting-out; SOLVENT ELECTROLYTE SYSTEMS; LIQUID-LIQUID; EQUATION; STATE; MODELS;

D O I：

10.1016/j.fluid.2006.10.019

中图分类号：

O414.1 [热力学];

学科分类号：

070201 [理论物理];

摘要：

The occurrence of various regions of phase equilibrium in three-component systems of water-alcohol (ketone)-sodium chloride was studied. As for methanol and ethanol there are two regions: the liquid single-phase region and the two-phase region of liquid+solid. For propanol and acetone (of a complete miscibility with water) there also occurs, however, the two-phase region of liquid+liquid, and the three-phase region of liquid+liquid+solid. Both phenomena occur while salting-out the organic solvents from the water solution by sodium chloride. The systems containing butanol, pentanol, methylethyl- and diethylketone (of an incomplete miscibility with water) confirm the occurrence of the system regions, similar to those for propanol or acetone. The results of the experiments were explained by considering competive molecular interactions between: water and sodium chloride; water and organic solvent; organic solvent and sodium chloride. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：24 / 28

页数：5

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