王攀,桑世华,刘乾,崔瑞芝

• 1:成都理工大学材料与化学化工学院
• 2:矿产资源化学四川省高校重点实验室

摘要(Abstract)：

采用等温溶解平衡法研究了三元体系NaBr-Na_2SO_4-H_2O和KBr-K_2SO_4-H_2O在高温398 K的相平衡关系,测定了398 K条件下平衡溶液的溶解度。研究发现:两个三元体系均为简单共饱和型,无复盐及固溶体生成。根据溶解度数据绘制了相图,相图中均有一个共饱和点,2个平衡固相结晶区和2条单变量曲线。三元体系NaBr-Na_2SO_4-H_2O所对应的平衡固相为NaBr和Na_2SO_4;KBr-K_2SO_4-H_2O体系对应的平衡固相为KBr和K_2SO_4。对比了上述两个三元体系在不同温度条件下共饱点的液相组成,实验结果表明,NaBr和KBr分别对Na_2SO_4和K_2SO_4有较强的盐析作用。

关键词(KeyWords)： 水盐体系;相平衡;溴化钠;硫酸钠;溴化钾;硫酸钾

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(41373062,U1407108);; 高等学校博士学科点专项科研基金(20125122110015);; 四川省教育厅高校科研创新团队(15TD0009)

作者(Author): 王攀,桑世华,刘乾,崔瑞芝

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