Systematic modifications of BTP-type ligands and effects on the separation of trivalent lanthanides and actinides

• Verfasst von: Beele, Björn B. [VerfasserIn]
• Verfasst von: Schwörer, Felicitas [VerfasserIn]
• Verfasst von: Panak, Petra [VerfasserIn]
• Titel: Systematic modifications of BTP-type ligands and effects on the separation of trivalent lanthanides and actinides
• Verf.angabe: Björn B. Beele, Udo Müllich, Felicitas Schwörer, Andreas Geist, Petra J. Panak
• Umfang: 6 S.
• Fussnoten: Gesehen am 02.11.2018
• Titel Quelle: Enthalten in: Procedia chemistry
• Jahr Quelle: 2012
• Band/Heft Quelle: 7(2012), S. 146-151
• ISSN Quelle: 1876-6196
• DOI: doi:10.1016/j.proche.2012.10.025
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 158252551X

Abstract

In this study the separation of Am(III) from Eu(III) in nitric acid using two BTP-type N-donor ligands, 2,6-bis(6-ethyl-1,2-diazine-3-yl)pyridine (Et-BDP) and 2,6-bis(4-npropyl-2,3,5,6-tetrazine-1-yl)pyridine (nPr-tetrazine) is presented. The extraction and separation properties of both ligands are tested by two phase liquid-liquid extraction at different acid concentrations. In contrast to nPr-BTP the bisdiazinyl ligand Et-BDP is prone to protonation at nitric acid concentrations of 0.2M and higher. A separation factor of SFAm/Eu ≈ 5 is obtained using Et-BDP as extracting ligand and with nPr-tetrazine a SFAm/Eu of 9.1 is realized. Hereby 2-bromodecanoic acid as lipophilic anion source is needed.