30℃时氯化锂-乙醇-水三元体系的相平衡研究  

Study on phase equilibrium of lithium chloride-ethanol-water ternary system at 30 ℃

作　　者：杨吉民[1] 徐广花[1] 王岩[2] 

机构地区：[1]山东临沂师范学院化学与资源环境学院,山东临沂276005 [2]中国药科大学

出　　处：《无机盐工业》2010年第5期27-28,38,共3页Inorganic Chemicals Industry

摘　　要：采用等温溶解平衡法测定了30℃时氯化锂-乙醇-水三元体系的平衡溶解度及饱和溶液的折光率和密度,并且绘制了30℃时氯化锂-乙醇-水三元体系的相图。用多元线性回归法对溶液的折光率、密度和氯化锂的溶解度与液相中乙醇含量之间的关系进行关联,并且计算了乙醇对氯化锂溶液的盐析率。该研究体系没有产生分层现象,固体为一水氯化锂。给出的氯化锂-乙醇-水三元体系的平衡数据,不仅为溶液化学提供了基础热力学数据,而且为氯化锂的分离纯化和萃取提供了依据。Equilibrium solubility of lithium chloride-ethanol-water（LiCl-C2H5OH-H2O） ternary system and refractive index and density of saturated solution have been investigated by isothermal equilibrium method at 30 ℃.Ternary phase diagrams of LiCl-C2H5OH-H2O ternary system at 30 ℃ were plotted.Relations between saturated solubility of LiCl,refractive index and density of saturated solution,and alcohol content in liquid phase were evaluated by multiple linear regression analysis algorithm.Salting-out rate of LiCl solution against ethanol was calculated.No demixing phenomena were observed and a hydrated salt LiCl·H2O was found.A series of phase equilibrium data of LiCl-C2H5OH-H2O ternary system were given out,which not only provided basic thermodynamic data for solution chemistry,but also provided foundation for purification and extraction of LiCl.

关 键 词：氯化锂 乙醇 三元体系 相平衡 溶解度 

分 类 号：TQ131.11[化学工程—无机化工]