title: Hydrophilic Clicked 2,6-Bis-triazolyl-pyridines Endowed with High Actinide Selectivity and Radiochemical Stability: Toward a Closed Nuclear Fuel Cycle.
abstract: There is still an evident need for selective and stable ligands able to separate actinide(III) from lanthanide(III) metal ions in view of the treatment of the accumulated radioactive waste and of the recycling of minor actinides. We have herein demonstrated that hydrophilic 2,6-bis-triazolyl-pyridines are able to strip all actinides in all the different oxidation states from a diglycolamide-containing kerosene solution into an acidic aqueous phase. The ascertained high actinide selectivity, efficiency, extraction kinetics, and chemical/radiolytic stability spotlight this hydrophilic class of ligands as exceptional candidates for advanced separation processes fundamental for closing the nuclear fuel cycle and solving the environmental issues related to the management of existing nuclear waste.
authors.affiliation: Nuclear Engineering Division, Department of Energy, Politecnico di Milano , P.zza L. da Vinci 32, I-20133 Milano, Italy.
authors.forename: Elena
authors.initials: E
authors.lastname: Macerata
authors.affiliation: Nuclear Engineering Division, Department of Energy, Politecnico di Milano , P.zza L. da Vinci 32, I-20133 Milano, Italy.
authors.forename: Eros
authors.initials: E
authors.lastname: Mossini
authors.affiliation: Nuclear Engineering Division, Department of Energy, Politecnico di Milano , P.zza L. da Vinci 32, I-20133 Milano, Italy.
authors.forename: Stefano
authors.initials: S
authors.lastname: Scaravaggi
authors.affiliation: Nuclear Engineering Division, Department of Energy, Politecnico di Milano , P.zza L. da Vinci 32, I-20133 Milano, Italy.
authors.forename: Mario
authors.initials: M
authors.lastname: Mariani
authors.affiliation: Department of Chemistry, Materials and Chemical Engineering "G. Natta", Politecnico di Milano , Piazza L. da Vinci, 32, I-20133 Milano, Italy.|CNR-ICRM , Via L. Mancinelli, 7, I-20131 Milano, Italy.
authors.forename: Andrea
authors.initials: A
authors.lastname: Mele
authors.affiliation: Department of Chemistry, Materials and Chemical Engineering "G. Natta", Politecnico di Milano , Piazza L. da Vinci, 32, I-20133 Milano, Italy.|CNR-ICRM , Via L. Mancinelli, 7, I-20131 Milano, Italy.
authors.forename: Walter
authors.initials: W
authors.lastname: Panzeri
authors.affiliation: Nuclear Energy Division, RadioChemistry & Processes Department, CEA , 30207 Bagnols-sur-Cèze, France.
authors.forename: Nathalie
authors.initials: N
authors.lastname: Boubals
authors.affiliation: Nuclear Energy Division, RadioChemistry & Processes Department, CEA , 30207 Bagnols-sur-Cèze, France.
authors.forename: Laurence
authors.initials: L
authors.lastname: Berthon
authors.affiliation: Nuclear Energy Division, RadioChemistry & Processes Department, CEA , 30207 Bagnols-sur-Cèze, France.
authors.forename: Marie-Christine
authors.initials: MC
authors.lastname: Charbonnel
authors.affiliation: Dipartimento di Chimica, Università di Parma , Parco Area delle Scienze 17/a, 43124 Parma, Italy.
authors.forename: Francesco
authors.initials: F
authors.lastname: Sansone
authors.affiliation: Dipartimento di Chimica, Università di Parma , Parco Area delle Scienze 17/a, 43124 Parma, Italy.
authors.forename: Arturo
authors.initials: A
authors.lastname: Arduini
authors.affiliation: Dipartimento di Chimica, Università di Parma , Parco Area delle Scienze 17/a, 43124 Parma, Italy.
authors.forename: Alessandro
authors.initials: A
authors.lastname: Casnati
mesh_terms: D008671:Actinoid Series Elements / Q000737:chemistry*; D057927:Hydrophobic and Hydrophilic Interactions; D007700:Kinetics; D028581:Lanthanoid Series Elements / Q000737:chemistry*; D008024:Ligands; D008956:Models, Chemical; D009678:Nuclear Energy; D010084:Oxidation-Reduction; D011725:Pyridines / Q000737:chemistry*; D011850:Radioactive Waste / Q000517:prevention & control*; D011854:Radiochemistry
chemical_list: D008671:Actinoid Series Elements; D028581:Lanthanoid Series Elements; D008024:Ligands; D011725:Pyridines; D011850:Radioactive Waste