Thermodynamics and phase equilibrium of the high concentration solid solution-aqueous solution system KCl-RbCl-H₂O from T = 298.15 K to T = 323.15 K

详细信息    查看全文

• 作者：Lijiang Guo^a ; ^b ; ^{l.j.guo@hotmail.com} ; Haijun Han^a ; Ouyang Dong^a ; Yan Yao^a
• 关键词：Solid solution-aqueous solution ; Water activity ; Solubility ; Pitzer model ; Potassium chloride ; Rubidium chloride
• 刊名：The Journal of Chemical Thermodynamics
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：106
• 期：Complete
• 页码：285-294
• 全文大小：1568 K
• 卷排序：106

文摘

The water activities of the solid solution-aqueous solution (SS-AS) system KCl–RbCl–H2O at T = 298.15 K and T = 323.15 K were measured by the isopiestic method. The solubility of this ternary system have been measured with the Flow-Cloud-Point method at T = (298.15, 308.15 and 323.15) K. The Pitzer model was selected to correlate the measured water activity and the solubility data. The model calculated results indicate that the equilibrium solid phase in the ternary system is (K, Rb)Cl(ss) regular solid solution. The Lippman log ∑ K − Xs − Xact and Φ ∑ m − Xs − Xaq equilibrium diagrams indicate again that the equilibrium solid phase was regular solid solution.