Solubility of 3-Aminobenzoic Acid in Supercritical Carbon Dioxide Modified by Ethanol

被引:13
|
作者
Li, Ying [1 ]
Ning, Yanying [1 ]
Jin, Junsu [1 ]
Zhang, Zeting [1 ]
机构
[1] Beijing Univ Chem Technol, Coll Chem Engn, Beijing 100029, Peoples R China
来源
基金
中国国家自然科学基金;
关键词
COSOLVENT; SOLIDS; TECHNOLOGY; MODEL; CO2;
D O I
10.1021/je4000845
中图分类号
O414.1 [热力学];
学科分类号
摘要
The solubilities of 3-aminobenzoic acid with different concentrations of ethanol cosolvent in supercritical carbon dioxide were measured by using flow-type equipment at pressures from 10.0 MPa to 21.0 MPa and temperature 308 K to 328 K. The effects on solubility of 3-aminobenzoic acid in SCCO2 with ethanol mole concentration of 1.0 % were investigated at temperatures of 308 K, 318 K, and 328 K; then, the study was also carried out with ethanol mole concentrations of 2.0 % and 4.0 % at 318 K, respectively. The experimental results revealed that the equilibrium solubility of 3-aminobenzoic acid was effectively increased in the presence of ethanol. The measured solubility data were correlated using the modified Sovova model, the modified Chrastil model, and the modified MST model, and the best agreement was obtained applying the modified Sovova model.
引用
收藏
页码:2176 / 2180
页数:5
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