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Citation: Qian Bo, Zhao Zhongshun, Zhang Jinsheng, Ma Zhiguo, Li Yingrong. ON THE SYNERGIC EXTRACTION OF LANTHANIDE IONS BY 1-PHENYL-3-METHYL-4-DICHLOROACETYL-PYRAZOLONE-5 AND TRI-n-OCTYLPHOSPHINE OXIDE[J]. Chinese Journal of Applied Chemistry, ;1989, 6(4): 75-77. shu

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

1.
Department of Chemistry, Shaanxi Normal University, Xian

Received Date: 20 October 1988
Available Online: 29 December 1988

The extraction of lanthanide ions(La³⁺, Nd³⁺, Dy³⁺, Yb³⁺) from nitlie 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 a(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 change and entropy change of the reaction at 25℃ have also been calculated.
- Synergic extraction,
- Lanthanum,
- Neodyniun,
- Dysprosium,
- Ytterbium,
- Pyrazolone,
- Tri-n-octylphosphine oxide
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