应用化学 ›› 1989, Vol. 0 ›› Issue (6): 22-26.

• 研究论文 • 上一篇    下一篇

用4,4'-壬二酰基-双(1-苯基-3-甲基-吡唑酮-5)萃取分离钍

袁黎明, 宋文骏   

  1. 云南大学化学系 昆明
  • 收稿日期:1988-11-30 修回日期:1989-06-30 出版日期:1989-12-10 发布日期:1989-12-10

EXTRACTION OF THORIUM WITH 4, 4'-NONANEDIOYL-BIS-(1-PHENYL-3-METHYL-5-PYRAZOLONE)(H2A)

Yuan Liming, Song Wenjun   

  1. Department of Chemistry, Yunnan University, Kunming
  • Received:1988-11-30 Revised:1989-06-30 Published:1989-12-10 Online:1989-12-10

摘要: 本文研究了标题试剂(简称H2A)与Th(Ⅳ)的络合作用及萃取行为,考查了H2A对Fe(Ⅲ)、Co(Ⅱ)、Ni(Ⅱ)、Zn(Ⅱ)、Pb(Ⅱ)、Cu(Ⅱ)、La(Ⅲ)、Yb(Ⅲ)和U(Ⅵ)的萃取作用,试验了它对Th(Ⅳ)与上述元素及Ca(Ⅱ)、Mg(Ⅱ)、Cr(Ⅲ)、In(Ⅲ)、V(Ⅴ)、Zr(Ⅵ)的分离效果。

关键词: 萃取, 钍, 吡唑酮, 金属离子螯合剂

Abstract: The extraction of thorium in nitric acid by H2A-CHCl3 solution has been studied. Theextraction equilibrium constant is found to be 1.03×106. The pH1/2 of Th(Ⅳ), Fe(Ⅲ),Co(Ⅱ), Ni(Ⅱ), Zn(Ⅱ), Cu(Ⅱ), Pb(Ⅱ), U(Ⅵ), La(Ⅲ) and Yb(Ⅲ) in nitric acid by H2A-CHCl3 are determined. A method for separating Th(Ⅳ) in monazite is proposed.

Key words: Extraction, Thorium, Pyrazolidone, Metal ion chelating agent