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Solvent extraction of lanthanide ions with 1-phenyl-3-methyl-4-benzoyl-pyrazolone-5 (HPMBP)

Extraktion von Seltenerdmetall-Ionen mit 1-Phenyl-3-methyl-4-benzoyl-pyrazolon-5 (HPMBP), I. Extraktion von Er(III), Yb(III) und Lu(III) aus wäßriger Lösung

I. Extraction of erbium(III), ytterbium(III) and lutetium(III) by HPMBP from aqueous solutions

  • Anorganische Und Physikalische Chemie
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Abstract

The solvent extraction of Er(III), Yb(III) and Lu(III) by 1-phenyl-3-methyl-4-benzoyl-pyrazolone-5 (HPMBP or HL) in carbon tetrachloride has been studied as a function of thepH of the aqueous phase and the concentration of the extractant in the organic phase. The equation for the extraction reaction has been suggested as:

$$Ln^{3 + } + 3HL_{(0)} \rightleftharpoons LnL_{3(0)} + 3H^ + \left( {Ln^{3 + } = Er,Yb, Lu} \right)$$

The extraction equilibrium constants (K ex ) and two-phase stability constants (β x3 ) for theLnL 3 complexes have been evaluated.

Zusammenfassung

Die Extraktion von Er(III), Yb(III) und Lu(III) mittels 1-Phenyl-3-methyl-4-benzoyl-pyrazolon-5 (HPMBP oder HL) in Kohlenstofftetrachlorid aus wäßriger Phase in Abhängigkeit vompH der wäßrigen Phase sowie von der Konzentration von HPMBP in der organischen Phase wurde untersucht. Die folgende Gleichung beschreibt die Extraktionsreaktion:

$$Ln^{3 + } + 3HL_{(0)} \rightleftharpoons LnL_{3(0)} + 3H^ + \left( {Ln^{3 + } = Er,Yb, Lu} \right)$$

Die Werte der Extraktions-Gleichgewichtskonstanten (K ex ) sowie der zweiphasigen Beständigkeitskonstanten (β x3 ) für die KomplexeLnL 3 wurden berechnet.

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Kuźnik, B., Czakis-Sulikowska, D.M. Solvent extraction of lanthanide ions with 1-phenyl-3-methyl-4-benzoyl-pyrazolone-5 (HPMBP). Monatsh Chem 119, 389–396 (1988). https://doi.org/10.1007/BF00810419

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  • DOI: https://doi.org/10.1007/BF00810419

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