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Solvent extraction of lanthanide ions with 1-phenyl-3-methyl-4-benzoyl-pyrazolone-5 (HPMBP), III: Extraction of gadolinium(III), terbium(III), dysprosium(III), holimum(III), and thulium(III) byHPMBP from aqueous solutions

Extraktion von Seltenerdmetall-Ionen mit 1-Phenyl-3-methyl-4-benzoyl-prazolon-5(HPMBP), 3. Mitt.: Extraktion von Gd(III), Tb(III), Dy(III), Ho(III), und Tm(III) aus wäßrigen Lösungen

  • Anorganische Und Physikalische Chemie
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Summary

The solvent extraction behaviour of Gd(III), Tb(III), Dy(III), Ho(III), and Tm(III) has been investigated using 1-phenyl-3-methyl-4-benzoyl-pyrazolone-5 (HPMBP or HL) in carbon tetrachloride as the extractant. Depending on the concentration ofHPMBP in the organic phase the chelatesLnL 3 [Ln(III)=Gd, Tb, Dy, Ho, Tm] and adductsLnL 3 · HL [Ln(III)=Gd, Tb, Dy, Ho] were extracted. The extraction equilibrium constants (K ex3 orK ex4) for the formation ofLnL 3 orLnL 3 · HL and the two-phase stability constants of the chelates or adducts (β x3 , β x4 ) have been evaluated.

Zusammenfassung

Die Extraktion von Gd(III), Tb(III), Dy(III), Ho(III), und Tm(III) mittels 1-Phenyl-3-methyl-4-benzoyl-pyrazolon-5 (HPMBP oderHL) in Kohlenstofftetrachlorid wurde untersucht. In Abhängigkeit von der Konzentration anHPMBP in der organischen Phase bildeten sich Chelate vom TypLnL 3 [Ln(III)=Gd, Tb, Dy, Ho, Tm] and Addukte vom TypLnL 3 · HL [Ln(III)=Gd, Tb, Dy, Ho]. Die Werte der Extraktions-Gleichgewichtskonstanten (K ex3 oderK ex4) fürLnL 3 oderLnL 3 · HL, sowie die Zweiphasen-Beständigkeitskonstanten (β x3 , β x4 ) der Chelate oder Addukte wurden berechnet.

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Czakis-Sulikowska, D.M., Kuźnik, B. & Malinowska, A. Solvent extraction of lanthanide ions with 1-phenyl-3-methyl-4-benzoyl-pyrazolone-5 (HPMBP), III: Extraction of gadolinium(III), terbium(III), dysprosium(III), holimum(III), and thulium(III) byHPMBP from aqueous solutions. Monatsh Chem 122, 789–794 (1991). https://doi.org/10.1007/BF00815918

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  • DOI: https://doi.org/10.1007/BF00815918

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