应用化学 ›› 1996, Vol. 0 ›› Issue (3): 90-92.

• 研究简报 • 上一篇    下一篇

双-(苯基-甲基-氧代吡唑基)乙二酮和邻菲咯啉协同萃取镧系元素

张安运, 钱博, 高改玲, 裴静, 王志纯   

  1. 陕西师范大学化学系 西安 710062
  • 收稿日期:1995-08-18 修回日期:1996-01-18 出版日期:1996-06-10 发布日期:1996-06-10

Synergic Extraction of Lanthanide Ions by Bis-(1′-Phenyl-3′-methyl-5′-Pyrazol one-4′-yl)Ethanedione and Phenanthroline

Zhang Anyun, Qian Bo, Gao Gailing, Pei Jing, Wang Zichun   

  1. Department of Chemistry, Shaanxi Normal University, Xi'an 710062
  • Received:1995-08-18 Revised:1996-01-18 Published:1996-06-10 Online:1996-06-10

摘要: 4-酰代双吡唑酮是一类非环四齿β-二酮螯合剂.我们合成了双-(1′-苯基-3′-甲基-5′-氧代吡唑-4′-基)乙二酮(H2BPMPED,简化为 H2A),研究了 H2A 和邻菲咯啉(Phen)的氯仿溶液在 HNO3介质中对 La3+、pr3+、Nd3+和 Gd3+的协同萃取.

关键词: 双-(苯基甲基氧代吡唑基)乙二酮, 邻菲咯啉, 协同萃取, 镧系元素

Abstract: The extraction of lanthanide ions(La3+,Pr3+,Nd3+,Gd3+)from nitric acid solution with mixtures of bis-(1′-phenyl-3′-methyl-5′-pyrazolone-4′-yl)ethanedione (H2BPMPED or H2A)and phenanthroline(phen)has been studied.The synergic extraction coefficent of neodymium is 3.56.The composition of extracted compound of neodymium is shown to be NdA·HA·phen.The pH values of half extraction of La3+,Pr3+,Nd3+,Gd3+ are 4.12,3.74,3.46,3.11 respectively.The extraction equilibrium constants enthalpy change and entropy change of the reaction have been calculated.

Key words: bis-(phenyl-methyl-pyrazolone-yl)ethanedione, phenanthroline, synergic extraction, lanthanide