Experimental study of phase equilibria in aqueous mixtures of phosphoric acid with isoamyl acetate and methyl isoamyl ketone at T = (298.2, 308.2, and 318.2)K

被引：25

作者：

Gilani, H. Ghanadzadeh ^{[2
]}

Gilani, A. Ghanadzadeh ^{[1
]}

Shekarsaraee, S. ^{[1
]}

机构：

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

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

来源：

FLUID PHASE EQUILIBRIA | 2013年 / 337卷

关键词：

Liquid-liquid equilibrium; Phosphoric acid; NRTL model; UNIQUAC model; LIQUID-LIQUID EQUILIBRIUM; TERNARY-SYSTEM; 293.15; K; SOLVENT-EXTRACTION; DIISOPROPYL-ETHER; WATER; 25-DEGREES-C; PURIFICATION; 40-DEGREES-C; ACID+1-OCTANOL;

D O I：

10.1016/j.fluid.2012.09.038

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

This study demonstrates the experimental solubility and tie-line data for (water + phosphoric acid + isoamyl acetate or methyl isoamyl ketone) ternary systems at T=(298.2, 308.2, and 318.2)K and atmospheric pressure for the first time. 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. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：32 / 38

页数：7

共 45 条

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