高等学校化学学报

高等学校化学学报 ›› 1998, Vol. 19 ›› Issue (4): 598.

• 论文 • 上一篇    下一篇

CuSO4-氨化P507-n-C6H14体系平衡常数的计算

崔丹1, 段淑红1, 孙铁2   

  1. 1. 黑龙江大学化学化工系, 哈尔滨, 150080;
    2. 哈尔滨市环境监测中心站, 哈尔滨, 150076
  • 收稿日期:1996-12-23 出版日期:1998-04-24 发布日期:1998-04-24
  • 通讯作者: 崔丹,女,35岁,硕士,讲师.
  • 作者简介:崔丹,女,35岁,硕士,讲师.

The Calculation of Thermodynamic Equilibrium Constant in CuSO4-aminate P507-n-C6H14 System

CUI Dan1, DUAN Shu-Hong1, SUN Tie2   

  1. 1. Department of Chemistry and Chemical Engineering, Heilongjiang University, Harbin, 150080;
    2. Environmental Monitor Centre of Harbin, Harbin, 150076
  • Received:1996-12-23 Online:1998-04-24 Published:1998-04-24

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摘要： 用热力学方法研究了酸性磷萃取剂与金属体系间的平衡计算模型,萃取体系的水相采用Pitzer半经验公式求算γCu2+,有机相用热力学关系求出了水、正已烷和萃取剂的活度系数.实验结果用Scatchard-Hildebrand模型关联,并经回归处理,得到了萃取反应热力学平衡常数(K=1.26×10-7～5.26×10-7)及萃合物的活度系数.

关键词: 萃取平衡常数, 活度系数, P507萃取剂

Abstract: The thermodynamic equilibrium model of acidic phosphoric extractant and metal system was studied with thermodynamic method. The activity coefficients of the components such as water, C6H14, extractant in organic phase can be calculated according to the thermodynamic relation, and γCu2+ can be estimated according to Pitzer's equation. The experimental data can be used to correlate and solved on computer. The results showed that the thermodynamic equilibrium constant Kwas in the range of 1.62×10～7 ～5.26×10-7 and the activity coefficients of the components were achieved.

Key words: Extractive equilibrium constant, Activity coefficient, P507 extractant

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