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

Chinese Journal of Applied Chemistry ›› 1989, Vol. 0 ›› Issue (4): 75-77.

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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

Department of Chemistry, Shaanxi Normal University, Xi'an

Received:1988-10-20 Revised:1988-12-29 Published:1989-08-10 Online:1989-08-10

Abstract

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

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, 0(4): 75-77.

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

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