3-羟基丁酸乙酯-巴豆酸乙酯-乙醇三元体系等压汽液平衡  

Isobaric Vapor-Liquid Equilibrium for Ethyl 3-Hydroxybutyrate-Ethyl Crotonate-Ethanol System at 101.325 kPa

作　　者：王彦飞[1] 马沛生[1] 王如帆[1] 贾艳宗[1] 孙义[1] 

机构地区：[1]天津大学化工学院

出　　处：《高校化学工程学报》2007年第1期9-13,共5页Journal of Chemical Engineering of Chinese Universities

基　　金：天津市应用基础研究重点项目(F103003)

摘　　要：在汽液双循环玻璃平衡釜中测定3-羟基丁酸乙酯、巴豆酸乙酯、乙醇的二元及三元体系的等压汽液平衡数据,用积分法对其进行了热力学一致性检验。回归实验数据得到3-羟基丁酸乙酯和巴豆酸乙酯的Antoine方程参数。用Wilson活度系数方程对实验数据进行了关联,取得了较好的结果。The isobaric vapor-liquid equilibrium data of ethyl 3-hydroxybutyrate-ethyl erotonate-ethanol system and of the related three binary systems were determined at 101.3kPa by using a vapor liquid-recycled equilibrium still. The integral method was used to examine the thermodynamic consistency. The constants of Antoine equation for the vapor pressure of the ethyl 3-hydroxybutyrate and ethyl crotonate were correlated by experimental data. The activity coefficient of the liquid phase was correlated by the Wilson equation and the model parameters of Wilson equation were correlated by the nonlinear least square method. The VLE data of above ternary system were predicted by the Wilson equation, and the calculated boiling points show good agreement with the experimental data.

关 键 词：聚3-羟基丁酸酯 3-羟基丁酸乙酯 巴豆酸乙酯 汽液相平衡 活度系数 乙醇 

分 类 号：O642.42[理学—物理化学]