(Liquid plus liquid) equilibrium data of (water plus phosphoric acid plus solvents) systems at T = (308.2 and 318.2) K

被引：31

作者：

Gilani, H. Ghanadzadeh ^{[1
]}

Gilani, A. Ghanadzadeh ^{[2
]}

Shekarsaraee, S. ^{[2
]}

Uslu, H. ^{[3
]}

机构：

[1] Univ Guilan, Dept Chem Engn, Rasht, Iran

[2] Univ Guilan, Dept Chem, Rasht 41335, Iran

[3] Beykent Univ, Dept Chem Engn, TR-34500 Istanbul, Turkey

来源：

JOURNAL OF CHEMICAL THERMODYNAMICS | 2012年 / 53卷

关键词：

(Liquid plus liquid) equilibrium; Ternary mixture; Phosphoric acid; NRTL model; UNIQUAC model; LSER approach; PHASE-EQUILIBRIA; TERNARY-SYSTEMS; REFRACTIVE-INDEXES; DIISOPROPYL-ETHER; EXTRACTION; PURIFICATION; MIXTURES; 25-DEGREES-C; TOLUENE; 2-BUTANOL;

D O I：

10.1016/j.jct.2012.04.011

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Ternary equilibrium data for the mixtures of {water + phosphoric acid + organic solvent (cyclohexane, methylcyclohexane, and toluene)} were determined at T = (308.2 and 318.2) K and atmospheric pressure. Solubility data were determined by the cloud-point titration method. In order to obtain the tie-line data, the concentration of each phase was determined by acidimetric titration, the Karl-Fischer technique, and refractive index measurements. The experimental tie-line data were correlated using the UNIQUAC and NRTL models. The reliability of the experimental data was determined through the Othmer-Tobias and Hand plots. Distribution coefficients and separation factors were evaluated over the immiscibility regions. The Katritzky LSER model was applied to correlate distribution coefficients and separation factors in these ternary systems. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：52 / 59

页数：8

共 46 条

[1] STATISTICAL THERMODYNAMICS OF LIQUID-MIXTURES - NEW EXPRESSION FOR EXCESS GIBBS ENERGY OF PARTLY OR COMPLETELY MISCIBLE SYSTEMS [J].