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High Molecular Weight Amines as Synergistic Agents in the Solvent Extraction of Lanthanides with Thenoyltrifluoroacetone

Hochmolekulare Amine als synergetische Reagentien bei der Extraktion von Lanthaniden mit Thenoyltrifluoroaceton

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Summary.

 The synergistic solvent extraction of Pr, Gd, and Yb with mixtures of thenoyltrifluoroacetone (HTTA) and chlorides and perchlorates of methyldioctylamine (MDOA), trioctylamine (TOA), and tridodecylamine (TDDA) in C6H6 was studied. The composition of the extracted species was determined as Ln(TTA)3 BHA (B=MDOA, TOA, TDDA; A=Cl−, ClO4 −). The values of the equilibrium constants and the separation factors were calculated. The effect of the ammonium salts on the extraction process and the separation of the lanthanides is discussed.

Zusammenfassung.

 Es wurde die synergetische Extraktion von Pr, Gd und Yb mit Mischungen aus Thenoyltrifluoroaceton (HTTA) und Methyldioctylamin (MDOA), Trioctylamin (TOA) und Tridodecylamin (TDDA) (Chlorid- und Perchloratform) in C6H6 untersucht. Die Zusammensetzung der Extraktionskomplexverbindungen Ln(TTA) 3 BHA (B=MDOA, TOA, TDDA; A=Cl−, ClO4 −) wurde bestimmt und die Gleichgewichtskonstanten wurden berechnet. Die Eigenschaften der synergetischen Extraktion werden diskutiert.

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Authors and Affiliations

  1. Department of Inorganic Chemistry, University of Chemical Technology and Metallurgy, BG-1756 Sofia, Bulgaria, BG

    Ivan L. Dukov & Valeri M. Jordanov

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  1. Ivan L. Dukov
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  2. Valeri M. Jordanov
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Received November 10, 1998. Accepted (revised) December 28, 1998

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Dukov, I., Jordanov, V. High Molecular Weight Amines as Synergistic Agents in the Solvent Extraction of Lanthanides with Thenoyltrifluoroacetone. Monatshefte fuer Chemie 130, 865–871 (1999). https://doi.org/10.1007/PL00010268

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  • DOI: https://doi.org/10.1007/PL00010268

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