Liquid-liquid equilibria of aqueous two-phase systems containing polyethylene glycol 4000 and di-potassium tartrate, potassium sodium tartrate, or di-potassium oxalate: Experiment and correlation

被引：57

作者：

Zafarani-Moattar, Mohammed Taghi ^{[1
]}

Tolouei, Shahram ^{[1
]}

机构：

[1] Univ Tabriz, Dept Phys Chem, Fac Chem, Tabriz, Iran

来源：

CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY | 2008年 / 32卷 / 04期

关键词：

Liquid-liquid equilibrium; Polyethylene glycol; Di-potassium tartrate; Di-potassium oxalate; Extended NRTL model;

D O I：

10.1016/j.calphad.2008.09.006

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Phase diagrams and liquid-liquid equilibrium (LLE) data of aqueous polyethylene glycol 4000 (PEG(4000)) + di-potassium tartrate or potassium sodium tartrate and aqueous PEG(4000) + di-potassium oxalate systems have been determined experimentally at 298.15 K. Furthermore, the Merchuk equation was used to correlate the binodal data; Othmer-Tobias and Bancraft, Setschenow and extended NRTL equations were used to fit the tie-line data of these systems. Finally, the effects of the type of salt on LLE are discussed. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：655 / 660

页数：6

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