对羟基苯甲酸丙酯在含夹带剂超临界CO_2中溶解度的研究  

Study on solubility of propyl p-hydroxybenzoate in supercritical CO_2 with cosolvent

作　　者：金君素[1] 徐静年[1] 张泽廷[1] 李颖[1] 

机构地区：[1]北京化工大学化学工程学院,北京100029

出　　处：《北京化工大学学报（自然科学版）》2005年第4期24-28,共5页Journal of Beijing University of Chemical Technology(Natural Science Edition)

基　　金：教育部科学研究重点项目(00017)

摘　　要：用流动法测定了在308.15K和8.0～23.0MPa条件下,对羟基苯甲酸丙酯在含纯和混合夹带剂的超临界CO2中的溶解度。纯夹带剂为丙酮,混合夹带剂为丙酮+环己烷(其摩尔比为1∶1),夹带剂摩尔分数为1%,2%,4%。分析了夹带剂效应。用膨胀液体模型关联实验数据,计算值与实验值较吻合,平均相对偏差为3.01%。The solubility of propyl p-hydroxybenzoate was measured in the supercritical CO2 at temperature 308.15 K and pressures from 8.0 to 23.0 MPa by using a flow-type phase equilibrium apparatus with pure and mixed cosolvents, such as acetone and cyclohexane ＋ acetone （molar ratio 1：1） at the mole fractions of 0.01-0.04. The cosolvent effect was analyzed. The measured solubilities in SC-CO2 with cosolvents were correlated by the expanded liquid model. And the result indicates that the estimated value is well fitted with the observed and the average absolute relative deviation is 3.01%.

关 键 词：对羟基苯甲酸丙酯 溶解度 超临界CO2 夹带剂 膨胀液体模型 

分 类 号：TQ013.1[化学工程]