Chinese Journal of Applied Chemistry ›› 1991, Vol. 0 ›› Issue (2): 11-15.

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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

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