Journal
ATALANTE 2012 INTERNATIONAL CONFERENCE ON NUCLEAR CHEMISTRY FOR SUSTAINABLE FUEL CYCLES
Volume 7, Issue -, Pages 13-19Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.proche.2012.10.004
Keywords
Actinides; polynitrogen ligands; phenanthroline; amides; complexation; extraction
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The complexation and solvent extraction of Eu(III) and actinides in different oxidation states (Am(III), Pu(IV), Np(V)) by bitopic molecules with a dipyridyl-phenanthroline cycle as nitrogen unit and one or two amido functions are described. The complexation has been studied in methanol-water solution with hydrophilic molecules to enhance knowledge about this new family of ligands and to identify the most interesting structural effect. Some extraction tests have been performed with lipophilic molecules of the family to check the possible utility of the new class of ligands under representative fuel reprocessing conditions. These first studies have demonstrated that the presence of a preorganized N-donors unit like dipyridyl-phenanthroline improves the ligand's affinity for actinides and its An/Ln selectivity. (C) 2012 Elsevier B. V ... Selection and/or peer-review under responsibility of the Chairman of the ATALANTE 2012 Program Committee
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