应用化学 ›› 1991, Vol. 0 ›› Issue (2): 11-15.

• 研究论文 • 上一篇    下一篇

甲基膦酸二甲庚酯与伯胺N1923对锌(Ⅱ)的协同萃取

韩树民, 李德谦   

  1. 中国科学院长春应用化学研究所, 长春 130022
  • 收稿日期:1990-03-02 修回日期:1990-05-28 出版日期:1991-04-10 发布日期:1991-04-10
  • 基金资助:
    国家自然科学基金

SYNERGISTIC EXTRACTION OF ZINC(Ⅱ)WITH DI(1-METHYLHEPTYL)METHYL PHOSPHONATE AND PRIMARY AMINE N1923

Han Shumin, Li Deqian   

  1. Changchun Institute of Applied Chemistty, Academia Sinica, Changchun 130022
  • Received:1990-03-02 Revised:1990-05-28 Published:1991-04-10 Online:1991-04-10

摘要: 本文研究了甲基膦酸二甲庚酯(P350)与伯胺N1923的正庚烷溶液在(Na,H)Cl介质中对Zn(Ⅱ)的协同萃取。用等摩尔系列法和斜率法以及IR和1H NMR确定了协萃配合物的组成为(PNH3Cl)3/2·ZnCl2·P350,协萃反应平衡常数1gKBC=2.10,协萃配合物的生成常数1gβ=0.46,计算了协萃反应的热力学函数,还从萃取剂的结构探讨了中性磷酸酯在协萃过程中的作用。

关键词: 甲基膦酸二甲庚酯, 伯胺, 协同萃取,

Abstract: The synergistic extraction of Zn(Ⅱ) from (Na,H)Cl solutions with di(1-methylheptyl)methylphosphonate (P350) and primary amine N1923(RNH2) in n-heptane at 30℃ has beeninvestigated.The composition of the synergistic extraction complex was determined to be(RNH3Cl)(3/2)·ZnCl2·P350 by common methods, as well as IR and 1H NMR.The equilibrium constants and thermodynamic parameters of the synergistic extractionreaction were calculated.The structural effects of TBP, DBBP and P350 on the synergisticextraction of Zn were also discussed.

Key words: di(methylheptyl)methyl phosphonate, primary amine, synergistic extraction, zine