Measurements and correlations of the solubilities of N-phenylacetamide compounds in supercritical carbon dioxide

• Main Author: 黃世岳
• Other Authors: 陳延平
• Format: Others
• Language: zh-TW
• Published: 2003
• Online Access: http://ndltd.ncl.edu.tw/handle/13145273585274669082

碩士 === 國立臺灣大學 === 化學工程學研究所 === 91 === A semi-flow type apparatus was used to measure the equilibrium solubilities of N-phenylacetamide、2-methyl-N-phenylacetamide、 4-methyl-N-phenylacetamide and 4-ethoxyl-N-phenylacetamide in supercritical carbon dioxide at 308.15、 318.15 and 328.15 K over the pressure range from 10 to 22.5 MPa. New equilibrium data of solid solubility in supercritical carbon dioxide are presented. The approach to solid-fluid phase equilibrium was examined by employing a plug flow fluid-solid mass transfer model. The Soave-Redlich-Kwong and the Peng-Robinson equations of state, with the van der Waals 2 mixing rules, were used to correlate the experimental data. The solid solubility data were also correlated with semi-empirical equations. It is shown that these solid solubility data are correlated with reasonably good accuracy using optimally fitted parameters.