Study of Extraction by Supercritical Fluid Entrained by Third Component

1)在8[20] MPa的压力范围内测量了维生素E、三棕榈酸甘油酯和棕榈酸在压缩二氧化碳中的溶解度。用二元参数的立方型状态方程对这些体系的数据进行了满意的关联。2）超临界夹带并不增加维生素E的溶解度<CO_2><H_2O>。该体系的相行为非常复杂，状态方程不能描述其平衡关系。另一方面，乙醇夹带的液体会显着改变溶解度。甲乙<CO_2>酮夹带的超临界流体使硬脂酸的溶解度发生了剧烈的变化。

1) Solubilities of vitamin-E, tripalmitin and palmitic acid in compressed carbon dioxide were measured in a pressure range of 8[20 MPa. The data of these systems were correlated satisfactorily by a cubic equation of state using two binary parameters.2) The solubility of vitamin-E was not enhanced by the supercritical <CO_2> entrained with <H_2O> . The phase behavior for the system was very complicated, then, the equation of state could not discribe the equilibrium relation. The other hand, the fluid entrained by ethanol could change the solubility considerably. An empirical equation was applicable to the solubility change.3) Supercritical <CO_2> entrained by methyl ethyl ketone changed the solubility of stearic acid drastically.