文献类型：期刊文献

中文题名：3,3’,4,4’-四甲基二苯甲烷在醇中溶解度的测定与关联

英文题名：Solubility determination and correlation of 3,3’,4,4’-tetramethyl-diphenylmethane in different alcohols

作者：康铭[1];高振明[2,3];杨泽[2];田翔[2,3];钱刚[1]

机构：[1]华东理工大学化工学院,上海200237;[2]上海华谊(集团)公司技术中心,上海200241;[3]上海市计算化学与化工工程技术研究中心,上海200000

年份：2023

卷号：52

期号：12

起止页码：3335

中文期刊名：应用化工

外文期刊名：Applied Chemical Industry

收录：CSTPCD;;北大核心:【北大核心2020】；CSCD:【CSCD_E2023_2024】；

基金：上海市青年科技启明星项目(B类)(22QB1402700)。

语种：中文

中文关键词：3,3’,4,4’-四甲基二苯甲烷;溶解度模型;热力学计算

外文关键词：3,3’,4,4’-tetramethyl-diphenylmethane;solubility model;thermodynamic calculation

摘要：3,3’,4,4’-四甲基二苯甲烷(TMDM)是合成酮酐型聚酰亚胺的关键原料,固液相平衡实验获取的溶解度数据可为其结晶工艺开发提供可靠依据。首先,经溶剂筛选后,采用动态法在常压下测定了TMDM在乙醇、异丙醇、异丁醇、正丙醇和正丁醇中273.15~293.15 K内的溶解度数据。结果表明,TMDM在上述溶剂中的溶解度均随温度升高而增加;在测试温度范围内,正丁醇中的溶解度最大,乙醇中的最小。随后,采用Apelblat方程、Van’t Hoff方程、Wilson模型以及λh方程对溶解度数据进行了关联,发现Apelblat方程的拟合效果最佳。最后,以Van’t Hoff方程计算了TMDM在上述5种醇类溶剂中的溶解焓、溶解熵和吉布斯自由能,结果表明其溶解过程为非自发的吸热过程,且主要推动力为焓驱动力。
3,3’,4,4’-Tetramethyl-diphenylmethane(TMDM)is a key raw material for the synthesis of ketone-anhydride type polyimide,and understanding its solubility behavior is the first step toward the successful development of crystallization processes.The solubility data of TMDM in selected solvents of ethanol,isopropanol,isobutanol,n-propanol and n-butanol were first determined by dynamic method at 273.15 to 293.15 K under atmospheric pressure.The results show that the solubility of TMDM in the above solvents increases with the temperature,among which the solubility in n-butanol is the largest and that in ethanol is the smallest.The solubility data were correlated by Apelblat equation,Van’t Hoff equation,Wilson model andλh equation,and the fitting effect of Apelblat equation was the best.Moreover,the dissolution enthalpy,dissolution entropy and Gibbs free energy were calculated with Van’t Hoff equation,and the results show that the dissolution process is a non-spontaneous endothermic process which is mainly enthalpy-driven.