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Citation: 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, 13(3): 90-92. shu

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

1.
Department of Chemistry, Shaanxi Normal University, Xi'an 710062

Received Date: 18 August 1995
Available Online: 18 January 1996

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.
- bis-(phenyl-methyl-pyrazolone-yl)ethanedione,
- phenanthroline,
- synergic extraction,
- lanthanide
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