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Solvent Extraction of Eu(III) and Am(III) with Thio and Amide Extractants

  • Jing Yao
  • Rosalind M. Wharf
  • Gregory R. Choppin

Abstract

Extraction studies of trivalent f-elements are reported for two thio donor ligands and for a diamide. The systems studied were tributylphosphate (TBP) + thiothenoyltrifluoracetone (HSTTA), triisobutyl phosphine sulfide (TiBPS) + thenoyltrifluoracetone (HTTA) and N,N′-dimethyl-N,N′-dihexyl-3-oxapentanediamide + HTTA. HSTTA and TiBPS were found to be much weaker extractants than the oxo analogs HTTA and TBP. Moreover, these soft donor ligands show little enhancement in Eu/An separation. A number of species were observed in the diamide extraction. The largest separation factor (α = 10) was obtained for the extraction of the M(TTA)(DMDHOPDA)(ClO4)2 species.

Keywords

Separation Factor Extraction Constant Thionyl Chloride Hydration Number Ether Oxygen 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media New York 1995

Authors and Affiliations

  • Jing Yao
    • 1
  • Rosalind M. Wharf
    • 1
  • Gregory R. Choppin
    • 1
  1. 1.Department of ChemistryFlorida State UniversityTallahasseeUSA

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