Solubility and tie line data of the water-phosphoric acid-solvents at T=303.2, 313.2, and 323.2 K: An experimental and correlational study

被引：32

作者：

Gilani, H. Ghanadzadeh ^{[2
]}

Gilani, A. Ghanadzadeh ^{[1
]}

Shekarsaraee, S. ^{[1
]}

机构：

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

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

来源：

THERMOCHIMICA ACTA | 2013年 / 558卷

关键词：

Liquid-liquid equilibrium; Phosphoric acid; NRTL model; UNIQUAC model; LIQUID-LIQUID EQUILIBRIUM; AQUEOUS-SOLUTIONS; PHASE EQUILIBRIA; EXTRACTION; PURIFICATION; MIXTURES; ETHER; 25-DEGREES-C; 40-DEGREES-C; METHANOL;

D O I：

10.1016/j.tca.2013.02.006

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Experimental solubility and tie-line data for (water + phosphoric acid + 1-decanol or 1-dodecanol or 1-dodecanethiol) ternary systems were obtained at T = 303.2, 313.2, and 323.2 K and atmospheric pressure for the first time. The investigated systems display two types of LLE behavior. The systems consisting of the heavy alcohols exhibit type-1 LLE behavior, while, a type-2 behavior is exhibited by the other system. Cloud point method was used to obtain the solubility data and the Karl-Fischer, acidimetric titration, and refractive index methods were used to determine the tie-line data. The Othmer-Tobias and Hand correlations equations were used to ascertain the quality of the LLE data. Distribution coefficients and separation factors were determined to evaluate the extracting capability of the solvents. The experimental LLE data were regressed and adequately correlated with the UNIQUAC and NRTL models. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：36 / 45

页数：10

共 45 条

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