| 25℃时三元体系SrCl2-CaCl2-H2O相平衡研究 |
| Phase Equilibrium in Ternary System SrCl2-CaCl2-H2O at 25℃ |
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| 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。 |
| 关键词: 相平衡 溶解度 氯化钙 氯化锶 固溶体 |
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| Abstract: Phase equilibrium in the ternary system SrCl2-CaCl2-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 XRD. The phase diagram was plotted according to the experimental values. In the equilibrium phase diagram of SrCl2-CaCl2-H2O, there are three invariant points, four univariant curves and four regions of crystallization: CaCl2·6H2O, calcium chloride base solid solution, strontium chloride base solid solution and SrCl2·6H2O. |
| Keywords: phase equilibrium solubility calcium chloride strontium chloride solid solution |
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| 毕玉敬,孙 柏,赵 静,宋彭生,李 武.25℃时三元体系SrCl2-CaCl2-H2O相平衡研究[J].无机化学学报,2011,27(9):1765-1771. |
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