期刊
FLUID PHASE EQUILIBRIA
卷 378, 期 -, 页码 78-82出版社
ELSEVIER
DOI: 10.1016/j.fluid.2014.06.030
关键词
N-Ethylcarbazole; Solubility; Apelblat equation; lambda h enthalpy; Thermodynamic properties
资金
- Key topics for State Key Laboratory of Materials-Oriented Chemical Engineering [ZK201304]
- Doctoral fund project [20133221110010]
- science and technology support program-part of agriculture [BE2013442]
- Joint innovation and research funding-prospective joint research projects [BY2013005-02]
The solubility of N-Ethylcarbazole in methanol, ethanol, n-propanol, isopropanol, 1-butanol, 1-pentanol and petroleum ether was measured over the temperature range of 279.15-319.15 K at around 4K intervals under atmospheric pressure. Experimental result showed that the solubility of N-Ethylcarbazole in seven solvents increased with the increasing temperature and they were in good agreement with the calculated solubility of 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. The values of both the standard molar enthalpy change and standard molar Gibbs energy change of solution were positive, which indicated that the process was endothermic. (C) 2014 Elsevier B.V. All rights reserved.
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