Equilibrium solubilities of ammonium benzoate, benzamide and their mixture in supercritical carbon dioxide

被引：13

作者：

Jin, Junsu ^{[1
]}

Wang, Yubo ^{[1
]}

Wu, Hao ^{[1
]}

Li, Jialin ^{[1
]}

Zhang, Zeting ^{[1
]}

机构：

[1] Beijing Univ Chem Technol, Coll Chem Engn, Beijing 100029, Peoples R China

来源：

FLUID PHASE EQUILIBRIA | 2012年 / 334卷

基金：

中国国家自然科学基金;

关键词：

Solubility; Ammonium benzoate; Benzamide; Mixture; Supercritical carbon dioxide; FLUID-PHASE EQUILIBRIA; HIGH-PRESSURE; CO2; EXTRACTION; COSOLVENT; SOLIDS; ACID; TECHNOLOGY;

D O I：

10.1016/j.fluid.2012.05.031

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The equilibrium solubilities of ammonium benzoate (ABE) and its mixture with benzamide (BZE) in supercritical carbon dioxide were measured at temperatures ranging from 308 to 328 K and pressures from 11.0 to 21.0 MPa using a dynamic flow method. The solubility of ABE in binary (ABE + CO2) system was correlated by 4 semi-empirical models (Chrastil, K-J, M-T and Yu); 2 semi-empirical models (T-G and Sovova) were used to correlate the solubility of ABE in ternary system (ABE + BZE + CO2). In ternary system, both the solubilities decreased as compared to their binary system, the reduction factor (e) and selectivity (alpha) are defined and calculated respectively. The differences between the solubilities of solid solute in binary and ternary systems were analyzed based on the assumption of molecular competition. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：152 / 156

页数：5

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