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:
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:
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