中华医学超声杂志

应用化学 ›› 1995, Vol. 0 ›› Issue (3): 64-66.

• 研究论文 • 上一篇    下一篇

异丙基膦酸单(1-己基-4-乙基)辛酯与HPMBP协同萃取稀土元素(Ⅲ)

孙静1, 郑重1, 李德谦1, 叶伟贞2   

  1. 1. 中国科学院长春应用化学研究所稀土化学与物理开放实验室, 长春 130032;
    2. 中国科学院上海有机化学研究所, 上海
  • 收稿日期:1994-11-30 修回日期:1995-01-12 出版日期:1995-06-10 发布日期:1995-06-10
  • 基金资助:
    国家科委攀登项目资助

Synergisitic Extraction of Rare Earth (Ⅲ)by PT-2 and HPMBP

Sun Jing1, Zheng Zhong1, Li Deqian1, Ye Weizhen2   

  1. 1. Laboratory of Rare Earth Chemistry and Physics, Changchun Institute of Applied Chemistry, Chinese Acadelny of Sciences, Changchun 130022;
    2. Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai
  • Received:1994-11-30 Revised:1995-01-12 Published:1995-06-10 Online:1995-06-10

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摘要： 异丙基麟酸单(1-己基-4-乙基)辛酷(PT-2,HL)是结构类似于2-乙基己基麟酸单2-乙基己基醋(HEH/EHP)的烷基麟酸单烷基酚,它对稀土元素的萃取已有研究.由于PT-2含有-个酷烷基,其萃取能力应与HEH/EHP相当,但因其醋烷基的空间位阻较大,导致pKa升高,萃取能力下降.在前文基础上,本文研究了PT-2与1-苯基-3-甲基-4-苯甲酞基毗哇酮-5(HPMBP,HA)对稀土元素(Ⅲ)的协同萃取,以La(Ⅲ)为例,确定了协萃机理和配合物组成.

关键词: 异丙基膦酸单(1-己基-4-乙基)辛酯, 苯基甲基苯甲酰基吡唑酮, 稀土元素, 协同萃取

Abstract: The synergistic extraction of rare earth(Ⅲ)including La, Nd,Y,Gd,Yb fromaqueous mineral acid solution(H2SO4,HCl, HNO3by isopropyl phosphonic acid mono( 1-hexyl-4-ethyl)octyl ester(PT-2, HL)with 1-phenyl-3-methyl-4-benzoyl-pyrazolone-5(HPMBP, HA)in benzeiie has been investigated.The compositions of the synergistic ex-tracted complexes and the equilibrium constants were determined and calculated respectively.The relationship between structures of the extractants and synergistic effects has been discussed.The mechanism of the synergistic extraction has been discussed also.

Key words: isopropyl phosphonic acid mono (hexyl-ethyl)octyl ester, phenyl methyl benzoylpyrazolone, rare earth(Ⅲ), synergistic extraction

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