25℃时三元体系SrCl_2-CaCl_2-H_2O相平衡研究  

Phase Equilibrium in Ternary System SrCl_2-CaCl_2-H_2O at 25℃

作　　者：毕玉敬[1,2] 孙柏[1] 赵静[1,2] 宋彭生[1] 李武[1] 

机构地区：[1]中国科学院青海盐湖研究所,西宁810008 [2]中国科学院研究生院,北京100049

出　　处：《无机化学学报》2011年第9期1765-1771,共7页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金(No.20773152);青海科技创新能力促进计划(No.2009-Z-725)资助项目

摘　　要：采用等温溶解平衡法,研究了三元体系SrCl2-CaCl2-H2O 25℃相平衡,同时测定了平衡溶液的物化性质(密度和折光率)。平衡液相所对应的平衡固相由湿渣法、偏光显微镜观测法和XRD法确定。根据实验研究数据,绘制了该三元体系相图。相图由3个无变量点、4条单变量曲线和4个盐类结晶区构成,4个结晶区分别对应CaCl2.6H2O、钙盐为基固溶体、锶盐为基固溶体和SrCl2.6H2O结晶区。Phase equilibrium in the ternary system SrC12-CaC12-H2O at 25 % was studied by isothermal method. Physicochemical properties （density and refractive index） of the solution were also determined. The solid phases were confirmed together by wet residue method, microscope observed method and plotted according to the experimental values. In the equilibrium phase diagram three invariant points, four univariant curves and four regions of crystallization： base solid solution, strontium chloride base solid solution and SrCl2·6H2O. XRD. The phase diagram was of SrCl2-CaCl2-H2O, there are CaCl2·6H2O, calcium chloride

关 键 词：相平衡 溶解度 氯化钙 氯化锶 固溶体 

分 类 号：O642.42[理学—物理化学] O645.12[理学—化学]