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Citation: Han Weihe, Liu Zhihong, Liang Hongbin, Wei Jiayu. Synergistic Extraction of Lanthanide by Bis(1'-phenyl-3'-methyl-5'-pyrazolone-4'-yl) butanedione-[1,4] and 4-Hydroxyantipyrine[J]. Chinese Journal of Applied Chemistry, ;1999, 16(4): 114-116. shu

Synergistic Extraction of Lanthanide by Bis(1'-phenyl-3'-methyl-5'-pyrazolone-4'-yl) butanedione-[1,4] and 4-Hydroxyantipyrine

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

Received Date: 23 December 1998
Available Online: 23 March 1999

The synergistic extraction of lanthanide ions(La³⁺, Pr³⁺, Nd³⁺, Gd³⁺, Dy³⁺) by mixture of title butanedione compound (H₂BPMPBD or H₂A) with 4-hydroxyantipyrine(HAP) from nitric acid solution has been studied. The synergistic coefficient for La³⁺ was 9.01. The composition of the extracted compound was shown to be LaA·HA·HAP. The pH_1/2 values for La³⁺, Pr³⁺, Nd³⁺, Gd³⁺ and Dy³⁺ were 3.95, 3.44, 3.20, 3.06 and 2.74, respectively. The extraction equilibrium constants, enthalpy change and entropy change of the reaction also have been calculated.
- synergistic extraction,
- lanthanide,
- bis(phenyl-methyl-pyrazolone-yl)butanedione,
- hydroxyantipyrine
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