Highly efficient separation of actinides from lanthanides by a phenanthroline-derived bis-triazine ligand.

Highly Efficient Separation of Actinides from Lanthanides by a 2 Phenanthroline - Derived Bis - triazine Ligand

2 Phenanthroline-Derived Bis-triazine Ligand 3 Frank W. Lewis, Laurence M. Harwood,* Michael J. Hudson, Michael G. B. Drew, Jean F. Desreux, 4 Geoffrey Vidick, Nouri Bouslimani, Giuseppe Modolo, Andreas Wilden, Michal Sypula, 5 Trong-Hung Vu, and Jean-Pierre Simonin 6 Department of Chemistry, University of Reading, Whiteknights, Reading RG6 6AD, U.K. 7 Coordination and Radiochemistry, Universit...

Probing the difference in covalence by enthalpy measurements: a new heterocyclic N-donor ligand for actinide/lanthanide separation.

Complexation of Am(III), Nd(III), and Eu(III) with a new heterocyclic nitrogen-donor ligand, 2,9-di(quinazolin-2-yl)-1,10-phenanthroline (denoted as BQPhen in this paper), was studied by thermodynamic measurements and theoretical computations. The stability constants of two successive complexes in dimethylformamide, ML(3+) and ML2(3+) where M stands for Nd, Eu, or Am while L stands for the BQPh...

Sanex - Btp Process Development Studies

Bis-triazinyl-pyridines (BTPs) have been developed at CEA-Marcoule to separate actinides(III) from lanthanides(III). Although high separation performances were observed in the counter-current hot test carried out in 1999 on a highly active effluent, the extraction and back-extraction yields of actinides(III) were lower than expected from calculation. A strong sensitivity of the extractant towar...

Actinide selectivity of 1,10-phenanthroline-2,9-dicarboxamide and its derivatives: a theoretical prediction followed by experimental validation.

The conventional concept of selective complexation of actinides with soft donor ligands (either S or N donor) has been modified here through exploiting the concept, "intra-ligand synergism", where a hard donor atom, such as oxygen preferentially binds to trivalent actinides [An(iii)] as compared to the valence iso-electronic trivalent lanthanides [Ln(iii)] in presence of another soft donor cent...

Hydrophilic sulfonated bis-1,2,4-triazine ligands are highly effective reagents for separating actinides(iii) from lanthanides(iii) via selective formation of aqueous actinide complexes† †Electronic supplementary information (ESI) available: Procedures and characterization data for all compounds. Tables and graphs of solvent extraction data. See DOI: 10.1039/c5sc01328c Click here for additional data file.