SOLUBILITY OF ORTHO-HYDROXYBENZOIC ACID IN SUPERCRITICAL CARBON-DIOXIDE

被引：117

作者：

GURDIAL, GS ^{[1
]}

FOSTER, NR ^{[1
]}

机构：

[1] UNIV NEW S WALES, SCH CHEM ENGN & IND CHEM, POB 1, KENSINGTON, NSW 2033, AUSTRALIA

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 1991年 / 30卷 / 03期

关键词：

D O I：

10.1021/ie00051a020

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The experimental equilibrium solubilities of o-hydroxybenzoic acid in supercritical carbon dioxide were measured at temperatures between 35 and 55-degrees-C and for pressures from 80 to 205 bar. Negligible solubility of m- and p-hydroxybenzoic acid was observed over the same range of temperature and pressure investigated. The solubility data was correlated by use of the thermodynamic model relating the solubility to the solvent density, an empirical model relating the enhancement factor to the density of the solvent, and a semiempirical correlation, based partly on regular solution theory and the van der Waals equation of state.

引用

页码：575 / 580

页数：6

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