固体溶质在含和不含夹带剂超临界流体中相平衡的研究  

On the equilibrium of solid solutes in supercritical fluid with or without cosolvents

作　　者：李群生[1] 张泽廷[1] 周庆荣[1] 于恩平[1] 

机构地区：[1]北京化工大学化学工程学院,北京100029

出　　处：《北京化工大学学报（自然科学版）》2003年第2期14-18,共5页Journal of Beijing University of Chemical Technology(Natural Science Edition)

基　　金：国家自然科学资金 (2 9976 0 0 1) ;教育部科学研究重点项目 (0 0 0 17)

摘　　要：用化学缔合方法对固体物质在超临界流体中的溶解度进行了研究 ,考虑到了含和不含夹带剂两种情况。基于化工热力学和化学缔合反应原理 ,推导出了固体溶质在超临界流体中的溶解度模型 ,当不含夹带剂时 ,该模型可转化为常用的溶解度计算公式。采用实验数据证实 ,该模型的总平均误差小于 5 % 。Solubility of solids in supercritical fluids with or without cosolvent was studied by a chemical association reaction method. Based on the thermodynamic and association reaction equilibrium theories, a model for the solubility of solids in supercritical fluids under association reactions was developed, by which a normal solubility calculation model could be developed for the case without cosolvent and association reactions. The model was tested and justified with the experimental data collected from the literature.

关 键 词：固体溶质 相平衡 超临界流体 缔合反应 溶解度 夹带剂 

分 类 号：TQ013.1[化学工程] TQ028.32