摘要
A flow apparatus was set up for measuring the solubility of a solid solute in a supercritical fluid withthe presence of a small amount of entrainer.The solubilities of biphenyl,diphenylamine and benzoic acid insupercritical carbon dioxide with one of the selected entrainers which were ethanol,acetone and n-hexanerespectively,were obtained in the pressure range of 10—32 MPa and the temperature range of 308—318K.Asolvolytic association theory has been proposed to explain the mechanism of entrainer effect,and theexperimental results were reasonably analysed.According to the solvolytic association theory,the association equa-tion of state was adopted to correlate the experimental data with good accuracy.
A flow apparatus was set up for measuring the solubility of a solid solute in a supercritical fluid with the presence of a small amount of entrainer. The solubilities of biphenyl, diphenylamine and benzoic acid in supercritical carbon dioxide with one of the selected entrainers which were ethanol, acetone and n-hexane respectively, were obtained in the pressure range of 10 - 32 MPa and the temperature range of 308 - 318K. A solvolytic association theory has been proposed to explain the mechanism of entrainer effect, and the experimental results were reasonably analysed. According to the solvolytic association theory, the association equation of state was adopted to correlate the experimental data with good accuracy.
