中华医学超声杂志

应用化学 ›› 1989, Vol. 0 ›› Issue (4): 13-17.

• 研究论文 • 上一篇    下一篇

1,9-双(1′-苯基-3′-甲基-5′-氧代吡唑-4'-基)壬二酮-[1,9]对铁(Ⅲ)、钴(Ⅱ)和镍(Ⅱ)萃取行为的研究

蒋次清, 刘松愈   

  1. 云南大学化学系 昆明
  • 收稿日期:1988-10-15 修回日期:1988-12-23 出版日期:1989-08-10 发布日期:1989-08-10
  • 基金资助:
    国家自然科学基金

STUDY ON THE EXTRACTION OF IRON(Ⅲ),COBALT(Ⅱ) AND NICKEL(Ⅱ)WITH 1,9-BIS(1'-PHENYL-3'-METHYL-5'-OXOPYRAZOLE-4'-YL)-1,9-NONANEDIONE

Jiang Ciqing, Liu Songyu   

  1. Department of Chemistry, Yunnan University, Kunming
  • Received:1988-10-15 Revised:1988-12-23 Published:1989-08-10 Online:1989-08-10

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451

摘要： 本文研究了标题化合物对铁(Ⅲ)、钴(Ⅱ)和镍(Ⅱ)的萃取行为,其pH1/2值分别为2,43、5.08和4.51。斜率法求得萃合物组成分别为Fe2A3、CoA和NiA。对固态铁萃合物作了红外光谱和热谱研究,并用饱和萃取法和等摩尔系列法对其组成作了进一步证实。

关键词: 萃取分离, 螯合萃取剂, 铁, 钴, 镍

Abstract: The extraction behavior of iron(Ⅲ), cobalt(Ⅱ) and nickel(Ⅱ) by 1,9-bis (1'-phenyl-3'-methyl-5'-oxopyrazole-4'-yl)-1, 9-nonanedione (abbreviated as H2A) in chloroform rom sodium nitrate and HAc-NaAc buffer medium has been studied. Their pH1/2 values were found to be 2.43, 5.08 and 4.51,respectively. Therefore, it is possible to separate ironfrom cobalt and nickel by extraction with H2A. The compositions of the extracted comple-xes were determined by the slope method as Fe2A3; CoA and NiA respectively. Their extrac-tion equlibrium constants (lgKex) were calculated to be 2.44±0.11, -7.33±0.18, -6.63±0.11 respectively. The solid ferric complex synthesised has been characterized by elemental,thermal analyses and IR measurement.

Key words: Extraction separation, Chelating extractant, Iron, Cobalt, Nickel

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