摘要
研究采用动态法测定了间苯二甲酸在离子液体(1-乙基-3-甲基咪唑四氟硼酸盐,[Emim]BF4)-水二元混合溶剂中的溶解度曲线和超溶解度曲线,并且采用经验方程、理想溶液模型及λh方程对溶解度数据进行了关联,经验方程和λh方程的关联结果较好。实验结果表明,间苯二甲酸在[Emim]BF4-H2O体系中的溶解度均随温度的升高而增大,且随二元混合溶剂中1-乙基-3-甲基咪唑四氟硼酸盐([Emim]BF4)含量的增加而增大。测得的超溶解度曲线与溶解度曲线基本平行,介稳区宽度均随温度的增加而变窄。
The solubility and supersolubillty for isophthalic acid in binary solvent mixtures 1 - ethyl - 3 - methylimidazolium tetrafluoroborate （[Emim]BF4） ＋ water were measured with dynamic method. The solubility data of three systems were correlated by the empirical equation, ideal solution model and λh equation, respectively. It was found that the empirical equation and λh equation fit solubility data well. The results have shown that solubility increased significantly with the increase of temperature in the reported systems, and that with the increase of [ Emim] BF4 content in aqueous [ Emim] BF4 solution as well. Plotted solubility and supersolubility with temperature, the two curves are almost parallel. The metastable zone width decreased with the increase of temperature.
出处
《辽宁化工》
CAS
2006年第9期506-509,共4页
Liaoning Chemical Industry
基金
北京理工大学基础研究基金资助项目(05120402)
