应用化学 ›› 1989, Vol. 0 ›› Issue (4): 1-7.

• 研究论文 •    下一篇

酸性磷型萃取剂的结构与萃取钴、镍性能关系的研究

许庆仁, 蒋亚东   

  1. 中国科学院上海有机化学研究所
  • 收稿日期:1988-11-02 修回日期:1989-01-27 出版日期:1989-08-10 发布日期:1989-08-10
  • 基金资助:
    中国科学院基金

STUDY ON RELATIONSHIP BETWEEN THE STRUCTURE OF ACIDIC ORGANOPHOSPHORUS EXTRACTANTS AND THEIR EXTRACTION PROPERTIES ON Co(Ⅱ)AND Ni(Ⅱ)

Xu Qingren, Jiang Yadong   

  1. Shanghai Institute of Organic Chemistry, Academia Sinica
  • Received:1988-11-02 Revised:1989-01-27 Published:1989-08-10 Online:1989-08-10

摘要: 考察了一系列二烷基磷酸酯,烷基膦酸单烷基酯和二烷基膦酸对钴(Ⅱ)、镍(Ⅱ)的萃取性能。应用相关分析法探讨了萃取性能与萃取剂分子中取代基的极性效应和空间效应之间的关系。并依据萃合物立体构型的差异解释了萃取剂结构对萃取钴、镍的不同影响。

关键词: 酸性磷型萃取剂, 钴(Ⅱ), 镍(Ⅱ), 萃取

Abstract: The extraction behavior of Co(Ⅱ) and Ni(Ⅱ) by a series of dialkylphosphoric acids,mono-esters of alkylphosphonic acids, and dialkylphosphini? acids was investigated. Thepolar and the steric effects of the substituents in extractant molecule on the extraction pro-perties were studied by means of a correlation analysis method. The extractability of Ni ismore dependent on the extractants' structure than that of Co, As the number of C-P bondsand the steric hindrance of the substituents increase, consequently, their separation abilityincreases, Ni extraction decreases more significantly than Co. This difference of Co andNi in extraction is explained in terms of the steric configuration of their complexes formedduring the extraction.

Key words: Acidic organophosphorus extractant, Co(Ⅱ), Ni(Ⅱ), Extraction