对羟基苯甲酸甲酯在含夹带剂超临界CO_2中溶解度的研究  

Study on the Solubility of Methyl p Hydroxybenzoate in Supercritical Carbon Dioxide with Cosolvent

作　　者：田国华[1] 石冰洁[1] 张泽廷[1] 金君素[1] 李颖[1] 于恩平[1] 

机构地区：[1]北京化工大学化学工程学院,北京100029

出　　处：《化工进展》2005年第6期635-638,共4页Chemical Industry and Engineering Progress

基　　金：教育部科学研究重点项目(No.00017)。

摘　　要：采用流动法测定了对羟基苯甲酸甲酯在含和不含夹带剂的超临界CO2中的溶解度,实验所用夹带剂分别为正己烷、乙醇、丙酮及混合夹带剂正己烷+丙酮(摩尔比为1∶1),夹带剂的摩尔分数均为0.035。论述了温度、压力和夹带剂对固体溶解度的影响,然后用化学缔合模型关联了实验数据,实验值与计算值吻合良好。The solubility of methyl p hydroxybenzoate was measured in supercritical carbon (dioxide) with and without co solvent at temperatures 308.15 K, 318.15 K and 328.15 K, and (pressures) from 8.0 MPa to 20.0 MPa. The co solvents, n hexane, ethanol, acetone, n (hexane +) acetone (molar (ratio 1∶1)), were studied at the mole fraction of 0.035. All the data were (obtained) by using a flow type phase equilibrium apparatus. The effects of temperature, pressure and co solvent on solid (solubility) were discussed. The measured solubility data were (correlated) by the chemical association model and the results were in fairly good agreement with the experimental data.

关 键 词：对羟基苯甲酸甲酯 超临界CO2 夹带剂 溶解度 

分 类 号：TQ028.32[化学工程]