期刊
JOURNAL OF CHEMICAL THERMODYNAMICS
卷 58, 期 -, 页码 288-291出版社
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jct.2012.11.021
关键词
Evodiamine; Solubility; Solvents; Correlation
资金
- National Natural Science Foundation of China [20806037, 20876131]
- Jiangxi Province Young Scientists (Jinggang Star) Cultivation Plan [20112BCB23002]
- Natural Science Foundation of Jiangxi, China [2007GQH1752]
- Natural Science Foundation of Jiangxi Province Department of Education [GJJ09420]
- Open Foundation of Key Laboratory of Poyang Lake Ecology, Bio-Resource Utilization of Ministry of Education [Z04998]
- Special Funds for Graduate Student Innovation in Jiangxi Province [YC2011-S005, YC2012-S017]
The values of the solubility of evodiamine in chloroform, dichloromethane, acetone, ethyl acetate, 1-butanol, isopropanol, ethanol, methanol, ethyl ether, cyclohexane, n-pentane and n-hexane were measured at T = (283.2, 293.2, 303.2, 313.2, and 323.2) K. The solubility of evodiamine in all the organic solvents studied increases with the increase of the temperature. The experimental solubility values were correlated by a simplified thermodynamic equation and the modified Apelblat equation. The values of the dissolution enthalpy and entropy of evodiamine in all organic solvents were calculated using the van't Hoff equation. The findings showed that the dissolution process was endothermic and entropy-driven. These data of solubility can be used to guide the processes of extraction, purification in the industry. (C) 2012 Elsevier Ltd. All rights reserved.
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