水—巯基乙酸—异辛醇三元体系液液平衡数据的测定与关联  

Determination and Correlation of Liquid-Liquid Equilibrium Data for Water-Thioglycolate-Isopropanol Ternary System

作　　者：徐伟[1] 李星[1] 尹小军[1] 王文彬[1] 苏佳伟[1] 程苏琴[1] 刘颖[1] 林军[1] 

机构地区：[1]南京师范大学化学与材料科学学院,江苏南京210023

出　　处：《南京师范大学学报（工程技术版）》2016年第4期88-92,共5页Journal of Nanjing Normal University(Engineering and Technology Edition)

基　　金：江苏省产学研前瞻性联合研究项目(BY2016001-03)

摘　　要：在温度分别为20℃、30℃、40℃下,常压测定了水—巯基乙酸—异辛醇三元体系的液液平衡数据,得到了三元体系的共轭相组成并绘制出相平衡曲线,确定了30℃为最佳萃取温度.实验数据用UNIQUAC和NRTL模型进行关联,关联值与实验值吻合良好.求得了溶剂对溶质的选择性系数,验证了以异辛醇为溶剂,采用液液萃取的方法分离巯基乙酸—水体系是完全可行的.In this paper, the data of the liquid-liquid equilibrium of Water-Thioglycodetermined at 30℃ , 4 0 ℃ , 5 0 ℃ and ordinary atmospheric pressure. The phase compositions and curve of this system are obtained. 30 r is proved to be the best temperature for the extraction process. The experimentaldata are correlated by using UNIQUAC and NRTL models. The agreement between calculated data and experis satisfactory- The selectivity coefficients of tlie solvent to solutes are calculated, and the results show that it is entirelyfeasible to separate Water-Thioglycolate system by using liquid-liquid extraction technique with isopropanol as solvent.

关 键 词：巯基乙酸 异辛醇 液液平衡 

分 类 号：TQ013.1[化学工程]