应用化学 ›› 1992, Vol. 0 ›› Issue (1): 7-12.

• 研究论文 • 上一篇    下一篇

PMBP与HEH[EHP]对Fe(Ⅲ)的协同萃取

韩树民, 李德谦   

  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 130022
  • 收稿日期:1991-01-07 修回日期:1991-07-17 出版日期:1992-02-10 发布日期:1992-02-10
  • 基金资助:
    国家自然科学基金

SYNERGISTIC EXTRACTION OF IRON (Ⅲ) WITH PMBP AND HEH[EHP]

Han Shumin, Li Deqian   

  1. Laboratory of Rare Earth Chemistry and Physics, Changchun Institute of Applied Chemistry, Academia Sinica, Changchun 130022
  • Received:1991-01-07 Revised:1991-07-17 Published:1992-02-10 Online:1992-02-10

摘要: 本文研究了1-苯基-3-甲基-4-苯甲酰基吡唑酮-5(PMBP,HL)和2-乙基己基膦酸单(2-乙基己基)酯(HEH[EHP],HA)的二甲苯溶液对盐酸介质中Fe(Ⅲ)的AA类协同萃取。用斜率法确定二元协萃配合物组成为FeL2A,计算了协萃反应的平衡常数和热力学函数,讨论了协萃配合物的IR和1H NMR谱。

关键词: 1-苯基-3-甲基-4-苯甲酰基吡唑酮-5, 2-乙基己基膦酸单(2-乙基己基)酯, 铁(Ⅱ), 协同萃取

Abstract: The synergistic extraction of Fe(Ⅲ) from (Na, H) Cl Solution with 1-Phenyl-3-methyl-4-benzoyl-pyrazotonl-5(PMBP, HL) and 2-ethylhexylphosphonic acid mono-2-ethyl-hexyl ester (HEH[EHP], HA) in xylene has been investigated. The composition of extracted complex has been determined to be FeL2A by the method of slope analysis, the mechanism of the synergistic extraction of Fe (Ⅲ) may be as follows: Their equilibrium constants and thermodynamic functions have been calculated to be:lgKAA=7.56±0.23 lgβ'=0.16 lgβ"=5.16 ΔH=21.76kJ/mol ΔG=-43.36kJ/mol ΔS=218.52J/mol.K, respectively. The IR and 1H NMR spectra of the synergistic extraction complex of Fe(Ⅲ) have been discussed as well.

Key words: 1-phenyl-3-methyl-4-benzoyl-pyrazolonl-5, 2-ethylhexyl phosphonic acid mono 2-ethyl-hexyl ester Iron(Ⅲ), synergistic extraction