Journal
JOURNAL OF CHEMICAL THERMODYNAMICS
Volume 68, Issue -, Pages 199-204Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jct.2013.07.015
Keywords
Solubility; Abietic acid; (Solid plus liquid) equilibrium; Correlation
Categories
Funding
- National Natural Science Foundation of China [20976031, 31060102]
- Natural Science Foundation of Guangxi Autonomous Region [2011GXNSFD018011, 2010GXNSFA013042, 0991030]
- Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology [Z001]
- Scientific and Technological Project of Guangxi [1099060-2]
- Science and Technology Program Foundation of Wuzhou city [200901011]
- Scientific Research Innovative Foundation of Doctoral Candidates [105930901008]
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Using a laser monitoring observation technique, the solubility of abietic acid in (ethanol + water) mixtures was measured by a dynamic method at atmospheric pressure. The solubility of abietic acid increased with an increase of temperature and the concentration of ethanol. Experimental solubility data were correlated by means of the Wilson, NRTL and lambda h equations utilizing parameters derived from the (solid + liquid) equilibrium (SLE) data. The results showed that the three equations are suitable for description of the solubility data of abietic acid in the (ethanol + water) mixtures investigated. (C) 2013 Elsevier Ltd. All rights reserved.
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