物理化学学报 >> 1985, Vol. 1 >> Issue (01): 95-103.doi: 10.3866/PKU.WHXB19850115

研究论文 上一篇    下一篇

金属溶剂萃取的热力学研究(Ⅴ)
2-乙基已基膦酸单(2-乙基已基)酯-硫酸钴体系

李以圭; 李继定; 陆九芳; 包铁竹; 滕藤   

  1. 清华大学化学化工系
  • 收稿日期:1984-06-03 修回日期:1984-10-24 发布日期:1985-02-15

THERMODYNAMICS OF SOLVENT EXTRACTION OF METALS(Ⅴ) EHEHPA-CoSO4 System

Li Yigui; Li Jiding; Lu Jiufang; Bao Tiezhu; Teng Teng   

  1. Department of Chemistry and Chemical Engineering Qinghua University; Beijing
  • Received:1984-06-03 Revised:1984-10-24 Published:1985-02-15

摘要: 本文应用简化的Pitzer公式, 计算了CoSO_4-H_2SO_4水相体系各单个离子的活度系数; 并应用经分子间作用力修正的Scatchard-Hildebrand模型计算了2-乙基已基膦酸单(2-乙基已基)酯—硫酸钻萃取体系中有机相各组分的活度系数。

Abstract: The previous papers of the authors have shown that with modern theories of solution the extraction equilibrium distribution can be calculated by the thermodynamic models.
If the ion-association and idssociation equilibrium do not occur in the aqueous phase, it is suitable to use Pitzer′s equation for the activity coefficients of the single electrolyte and to use Frank-Thomson diffuse lattice theory for the activity coefficients of the mixed electrolytes.
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