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Citation: Xu Qingren, Jiang Yadong. STUDY ON RELATIONSHIP BETWEEN THE STRUCTURE OF ACIDIC ORGANOPHOSPHORUS EXTRACTANTS AND THEIR EXTRACTION PROPERTIES ON Co(Ⅱ) AND Ni(Ⅱ)[J]. Chinese Journal of Applied Chemistry, ;1989, 6(4): 1-7. shu

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 Date: 2 November 1988
Available Online: 27 January 1989

The extraction behavior of Co(Ⅱ) and Ni(Ⅱ) by a series of dialkylphosphoric acids,mono-esters of alkylphosphonic acids, and dialkylphosphinie acids was investigated. The polar and the steric effects of the substituents in extractant molecule on the extraction properties were studied by means of a correlation analysis method. The extractability of Ni is more dependent on the extractants' structure than that of Co, As the number of C-P bonds and the steric hindrance of the substituents increase, consequently, their separation ability increases, Ni extraction decreases more significantly than Co. This difference of Co and Ni in extraction is explained in terms of the steric configuration of their complexes formed during the extraction.
- Acidic organophosphorus extractant,
- Co(Ⅱ),
- Ni(Ⅱ)
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