期刊
FLUID PHASE EQUILIBRIA
卷 201, 期 1, 页码 79-96出版社
ELSEVIER
DOI: 10.1016/S0378-3812(02)00070-5
关键词
solid-fluid equilibria; experimental method; data
A semi-flow type apparatus was used to measure the equilibrium solubilities of benzoin, propyl 4-hydroxybenzoate, and mandelic acid in supercritical carbon dioxide at 308.15, 318.15, and 328.15 K over the pressure range from 9 to 24 MPa. New equilibrium data of solid solubility in supercritical carbon dioxide are presented. The approach to solid-fluid phase equilibrium is examined based on a plug flow fluid-solid mass transfer model. The Soave-Redlich-Kwong and the Peng-Robinson equations of state (EOS), with the van der Waals and the Huron-Vidal type mixing rules were used to correlate the experimental data. The solid solubility data were also correlated with density based semi-empirical equations of Chrastil, and Santiago-Teja. It is shown that these solid solubility data are correlated with reasonably good accuracy using optimally fitted parameters. (C) 2002 Elsevier Science B.V. All rights reserved.
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