中华医学超声杂志

应用化学 ›› 1989, Vol. 0 ›› Issue (4): 75-77.

• 研究简报 • 上一篇    下一篇

1-苯基-3-甲基-4-二氯乙酰基吡唑酮-5和三正辛基氧化膦协同萃取镧系离子的研究

钱博, 赵忠顺, 张进胜, 马治国, 李应荣   

  1. 陕西师范大学化学系 西安
  • 收稿日期:1988-10-20 修回日期:1988-12-29 出版日期:1989-08-10 发布日期:1989-08-10

ON THE SYNERGIC EXTRACTION OF LANTHANIDE IONS BY 1-PHENYL-3-METHYL-4-DICHLOROACETYL-PYRAZOLONE-5 AND TRI-n-OCTYLPHOSPHINE OXIDE

Qian Bo, Zhao Zhongshun, Zhang Jinsheng, Ma Zhiguo, Li Yingrong   

  1. Department of Chemistry, Shaanxi Normal University, Xi'an
  • Received:1988-10-20 Revised:1988-12-29 Published:1989-08-10 Online:1989-08-10

PDF

452

被引次数

11

摘要： 1-苯基-3-甲基-4-三氟乙酰基吡唑酮-5(PMTFP)与磷酸三丁酯(TBP)或三正辛基氧化膦(TOPO)对三价稀土的协同萃取已有报道[1,2]。本文研究了1-苯基-3-甲基-4-二氯乙酰基吡唑酮-5(PMDCP)和TOPO的氯仿溶液从硝酸介质中对La3+、Nd3+、Dy3+和Yb3+的协同萃取。

关键词: 协同萃取, 镧, 钕, 镝, 镱, 吡啶酮, 三正辛基氧化膦

Abstract: The extraction of lanthanide ions(La3+, Nd3+, Dy3+, Yb3+) from niuie acid solution with mixturc of 1-thenyl-3-methyl-4-dichloroacetyl-pyrazolone-5(PMDCP) and tri-n-(octy-lphosphine oxide (TOPO) hae been studied. The synergic extraction coefficent of lanthanum 27.3. The composition of extracted compound of lanthanum was shown to be La(PMDCP)3·(TOPO)2. The pH values of half an, extraction rate at 25℃ of La3+, Nd3+, Dy3+ and Yb3+ are 2.11, 1.77, 1.60 and 1.50 respectively. The extraction equilibrium constants, enthalpy cha-nge and entropy change of the reaction at 25℃ have also been calculated.

Key words: Synergic extraction, Lanthanum, Neodyniun, Dysprosium, Ytterbium, Pyrazolone, Tri-n-octylphosphine oxide

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