Liquid-liquid equilibrium of aqueous two-phase systems composed of hydrophilic alcohols (ethanol/2-propanol/1-propanol) and MgSO4/ZnSO4 at (303.15 and 313.15)K and correlation

被引：45

作者：

Guo, Wenlu ^{[1
]}

Ma, Jingjing ^{[1
]}

Wang, Yun ^{[2
]}

Han, Juan ^{[2
]}

Li, Yanfang ^{[2
]}

Song, Shan ^{[3
]}

机构：

[1] Jiangsu Univ Sci & Technol, Sch Biol & Chem Engn, Zhenjiang 212003, Peoples R China

[2] Jiangsu Univ, Sch Chem & Chem Engn, Zhenjiang 212003, Peoples R China

[3] Jilin Normal Univ, Sch Comp, Siping 136000, Peoples R China

来源：

THERMOCHIMICA ACTA | 2012年 / 546卷

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

Liquid-liquid equilibrium; Aqueous two-phase systems; Hydrophilic alcohols; Magnesium sulfate/zinc sulfate; PHASE-DIAGRAM; IONIC LIQUIDS; ORGANIC SALTS; PLUS WATER; ETHANOL; SEPARATION; BEHAVIOR;

D O I：

10.1016/j.tca.2012.07.022

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Binodal data for ethanol, 2-propanol and 1-propanol + magnesium sulfate/zinc sulfate + water systems were experimentally determined at (303.15 and 313.15)K, respectively. An empirical equation was used to correlate binodal data. The liquid-liquid equilibrium data for part of the investigated systems were obtained via the MATLAB. In order to evaluate the dependability of the calculation method and the tie-line data, the liquid-liquid equilibrium data were correlated by the Othmer-Tobias and Bancroft equations. The salting-out abilities of the investigated salts and the phase-forming abilities of the investigated hydrophilic alcohols were discussed by the effective excluded volume (EEV) of salt. The salting-out abilities of the investigated salts follow the order ZnSO4 > MgSO4, which can be indicated by the location of the binodal curves plotted in molality and the salting-out coefficient. In addition, the phase-forming abilities of the investigated hydrophilic alcohols follow the order: 1-propanol > 2-propanol > ethanol. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：8 / 15

页数：8

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