| 碱金属氯化物-盐酸-水体系25℃溶解度预测 |
| PREDICTION OF THE SOLUBILITIES OF MCl-HCl-H2O (M=Li、Na、K、Rb and Cs) SYSTEMS AT 25℃ |
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| 摘要: 文献中未见MCl-HCl-H2O(M=Li、Na、K、Rb、Cs)三元体系25℃时在HCl全浓度范围内溶解度预测的报道。本文报道应用Pitzer的离子相互作用模型，系统地对0.1～16.0 mol·kg-1浓度范围内HCl的活度系数和渗透系数值进行最小二乘法拟合，得到一套优于文献上报道的作用参数。用这一套参数和本文报道中五个三元体系得到的θmn和φmnx，对溶解度预测获得满意结果。本方法可以推广到其它任何温度时、甚至相关四元和五元体系的溶解度预测，可以减少繁琐的实验测定，并对于利用HCl从盐卤中盐析分离LiCl、RbCl和CsCl的相化学工艺计算具有实际意义。 |
| 关键词: 离子相互作用模型 成盐元素 溶解度预测 |
| 基金项目: |
| Abstract: The solubilities MCl-HCl-H2O (M=Li、Na、K、Rb and Cs) systems at 25℃ were calculated using the ion-interaction model suggested by Pitzer. The ion-interaction parameters of HCl in 0.1-16.0 molality at 25℃ and the ions-interaction parameters of 2-spices and 3-species between H and M and among H、M and Cl were presented and evaluated. All the studies have not been reported in the literature. The comparison between the experimental results and calculated solubilities indicated that the solubilities of the above mentioned ternary systems can be accurately predicted by using the ion-interaction model. The prediction is of great significance in extracting various salts from brine. |
| Keywords: ion-interaction model halophism element solubility prediction |
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| 李亚红,宋彭生,高世扬,夏树屏.碱金属氯化物-盐酸-水体系25℃溶解度预测[J].无机化学学报,1999,15(4):467-474. |
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