期刊
JOURNAL OF CHEMICAL THERMODYNAMICS
卷 55, 期 -, 页码 50-55出版社
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jct.2012.06.005
关键词
Tetrabromothiophene; Solubility; Van't Hoff equation; Apelblat equation; lambda h Equation; Solution thermodynamics
资金
- Natural Science Foundation of China (NSFC) [31171644]
- Research and Innovation Project for College Graduates of Jiangsu Province [CXZZ11_0359]
The solubility of 2,3,4,5-tetrabromothiophene were measured in methanol, ethanol, propan-1-ol, butan-1-ol, toluene, ethyl formate, ethyl acetate, trichloromethane and oxolane within the temperature range between 278.05 K and 325.15 K under atmospheric pressure by gravimetric method. The solubility of 2,3,4,5-tetrabromothiophene in those selected solvents increased with increasing temperature. The solubility data were correlated with the van't Hoff equation, the modified Apelblat equation and the lambda h equation. The thermodynamic properties of the solution process, including the Gibbs energy, enthalpy, and entropy were calculated by the van't Hoff analysis and the Gibbs equation. The experimental results showed that ethyl acetate had the potential as a better solvent in the re-crystallization process of 2,3,4,5-tetrabromothiophene. Crown Copyright (C) 2012 Published by Elsevier Ltd. All rights reserved.
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