National Taiwan University Dept Chem EngnCheng, Kong-WeiKong-WeiChengTang, MuoiMuoiTangChen, Yan-PingYan-PingChen2006-11-142018-06-282006-11-142018-06-282002http://ntur.lib.ntu.edu.tw//handle/246246/2006111501233103A 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 328.15K over the pressure range from 9 to 24MPa. 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.application/pdf168376 bytesapplication/pdfen-USsolid-fluid equilibriaexperimental methoddatajournal articlehttp://ntur.lib.ntu.edu.tw/bitstream/246246/2006111501233103/1/8295.pdf