期刊
JOURNAL OF CHEMICAL THERMODYNAMICS
卷 42, 期 2, 页码 193-197出版社
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jct.2009.08.001
关键词
Supercritical carbon dioxide; Temperature independent mixing rule; Kwak and Mansoori; Reformulated Chrastil equation
资金
- Department of Biotechnology, India
- Department of Science and Technology, India
The solubilities of two fatty acids, namely hexadecanoic acid (palmitic acid) and octadecanoic acid (stearic acid) in supercritical carbon dioxide (SCCO2), were determined at T = (328 and 338) K from 12.8 MPa to 22.6 MPa. Three models, namely a thermodynamic model based on the Peng-Robinson equation of state with Kwak and Mansoori mixing rules, a model based on dilute solution theory proposed by Mendez-Santiago and Teja and a new reformulated Chrastil equation model, were used to correlate the solubilities. In all the models, the correlation constants are temperature independent. All the models successfully correlated the experimental results for the solubilities of hexadecanoic acid within 3%. (C) 2009 Elsevier Ltd. All rights reserved.
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