Trivalent lanthanide/actinide separation is a research area of interest due to the advances it will provide in closing the nuclear fuel cycle in many countries. The most effective approach to this separation has been shown through the use of soft N-donor ligands. Several of the currently and previously studied ligands fall in the polyaminopolycarboxylate class of ligands. DOTA is a structurally rigid polyaminopolycarboxylate ligand that forms stable complexes with the trivalent lanthanides; however it has not been considered as a separations reagent. This is primarily due to the slow kinetics of complexation. Shown through a series of temperature studies, this kinetic barrier can be lowered.  By operating at an elevated temperature, preliminary Eu/Am separation studies have been done with DOTA as the trivalent actinide holdback reagent. The results presented discuss the conditions of separation. Work supported by Department of Energy, Office of Nuclear Energy, Nuclear Energy University Programs.

Preliminary trivalent Ln/An separations study with the tetraazamacrocyclic ligand 1,4,7,10-tetrazacyclododecane-N,N',N'',N'''–tetraacetic acid, DOTA

244th National Meeting (2012)

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.