物理化学学报 >> 1992, Vol. 8 >> Issue (01): 94-99.doi: 10.3866/PKU.WHXB19920117

研究论文 上一篇    下一篇

KCl-LiCl-H2O体系热力学性质的研究

李军; 宋彭生; 姚燕; 王瑞陵   

  1. 中国科学院盐湖研究所,西宁 810008
  • 收稿日期:1990-09-25 修回日期:1991-06-24 发布日期:1992-02-15
  • 通讯作者: 李军

Thermodynamic Properties of KCl-LiCl-H2O System at 25 ℃

Li Jun; Song Peng-Sheng; Yao Yan; Wang Rui-Ling   

  1. Institute of Salt Lakes, Academia Sinica, Xining 810008
  • Received:1990-09-25 Revised:1991-06-24 Published:1992-02-15
  • Contact: Li Jun

摘要: 用K-ISE、Li-ISE和Cl-ISE测定了25 ℃时体系中KCl、LiCl的平均活度系数, 溶液的离子强度从0.1~4.0 mol·kg~(-1), 组成范围从纯的KCl到纯的LiCl。将Pitzer方程应用于测定结果, 用多元线性回归方法求出了Pitzer参数。

关键词: KCl-LiCl-H2O体系, 活度系数, 离子选择型电极, Pitzer方程

Abstract: The activity coefficients of KCl and LiCl in KCl-LiCl aqueous mixtures have been measured at 25 ℃ in ionic strength range of 0.1~4.0 mol·kg~(-1). The measurement were made using K-ISE and Li-ISE vs. Cl-ISE in a wide range of compositions from pure KCl to pure LiCl. The data were fitted to Pitzer's equation using regressin method, Pitzer parameters were obtained.

Key words: KCl-LiCl-H2O system, Activity coeffcients, Ionic selective electrode, Pitzer equation