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

Chinese Journal of Applied Chemistry ›› 1996, Vol. 0 ›› Issue (3): 90-92.

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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

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

Abstract

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

Zhang Anyun, Qian Bo, Gao Gailing, Pei Jing, Wang Zichun. Synergic Extraction of Lanthanide Ions by Bis-(1′-Phenyl-3′-methyl-5′-Pyrazol one-4′-yl)Ethanedione and Phenanthroline[J]. Chinese Journal of Applied Chemistry, 1996, 0(3): 90-92.

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

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