张群艳,吴艳阳,李赵晋,唐玮峥

• 1:华东理工大学 化工学院，上海 200237

摘要(Abstract)：

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。

关键词(KeyWords)： 均四甲苯;溶解性;热力学;相平衡;模型关联

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 张群艳,吴艳阳,李赵晋,唐玮峥

DOI: 10.3969/j.issn.1003-9015.2020.05.004

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