文献类型：期刊文献

中文题名：均四甲苯在不同溶剂中溶解度的测定及关联

英文题名：Measurement and correlation of solubility of durene in different solvents

作者：张群艳[1];吴艳阳[1];李赵晋[1];唐玮峥[1]

机构：[1]华东理工大学化工学院,上海200237

年份：2020

卷号：34

期号：5

起止页码：1120

中文期刊名：高校化学工程学报

外文期刊名：Journal of Chemical Engineering of Chinese Universities

收录：CSTPCD;;EI(收录号：20204709517733);Scopus;北大核心:【北大核心2017】；CSCD:【CSCD2019_2020】；

语种：中文

中文关键词：均四甲苯;溶解性;热力学;相平衡;模型关联

外文关键词：durene;solubility;thermodynamics;phase equilibria;association

摘要：采用动态法测定常压、温度为283.15~308.15 K下均四甲苯在甲醇、乙醇、异丙醇、正丁醇、乙腈、丙酮、乙酸乙酯、乙酸正丁酯及乙酸异戊酯9种纯溶剂中的溶解度。数据表明,均四甲苯在9种纯溶剂中的溶解度随温度的升高而增加;在相同的温度下,均四甲苯在不同溶剂中溶解度的大小依次为:乙酸异戊酯>乙酸正丁酯>乙酸乙酯>丙酮>正丁醇>异丙醇>乙腈>乙醇>甲醇。采用改进的Apelblat方程、λh方程、NRTL方程及Wilson方程关联溶解度数据,关联结果良好,且改进的Apelblat方程拟合效果最佳。结合Wilson模型关联结果及实验测定数据,确定了均四甲苯与有机溶剂二元体系的混合吉布斯自由能、混合焓及混合熵,结果表明均四甲苯在9种溶剂中的溶解过程均为自发的吸热过程。所得数据为均四甲苯重结晶过程的设计及优化提供了支持。
The solubility of durene in methanol,ethanol,isopropanol,n-butanol,acetonitrile,acetone,methyl acetate,n-butyl acetate and isoamyl acetate were measured by a dynamic method at temperatures from 283.15 to 308.15 K under atmospheric pressure.The results show that the solubility in those 9 solvents increases with the increase of temperature.At a given temperature range,the order of durene solubility is isoamyl acetate>n-butyl acetate>methyl acetate>acetone>n-butanol>isopropanol>acetonitrile>ethanol>methanol.The modified Apelblat equation,λh equation,NRTL equation and Wilson equation were used to correlate the experimental solubility data,and the results indicate that the solubility data can be well correlated by these four models and the modified Apelblat equation provided the best fitting.The mixing Gibbs energy,mixing enthalpy,and mixing entropy were obtained on the basis of the Wilson model and the experimental data.The mixing process of durene in the studied solvents is an endothermic and spontaneous process.The results provide the basic data for the design and optimization of durene crystallization processes.