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Room temperature electrodeposition of actinides from ionic solutions

United States Patent

9,631,290
April 25, 2017
View the Complete Patent at the US Patent & Trademark Office
Idaho National Laboratory - Visit the Technology Transfer and Commercialization Office Website
Uranic and transuranic metals and metal oxides are first dissolved in ozone compositions. The resulting solution in ozone can be further dissolved in ionic liquids to form a second solution. The metals in the second solution are then electrochemically deposited from the second solutions as room temperature ionic liquid (RTIL), tri-methyl-n-butyl ammonium n-bis(trifluoromethansulfonylimide) [Me.sub.3N.sup.nBu][TFSI] providing an alternative non-aqueous system for the extraction and reclamation of actinides from reprocessed fuel materials. Deposition of U metal is achieved using TFSI complexes of U(III) and U(IV) containing the anion common to the RTIL. TFSI complexes of uranium were produced to ensure solubility of the species in the ionic liquid. The methods provide a first measure of the thermodynamic properties of U metal deposition using Uranium complexes with different oxidation states from RTIL solution at room temperature.
Hatchett; David W. (Las Vegas, NV), Czerwinski; Kenneth R. (Seattle, WA), Droessler; Janelle (Las Vegas, NV), Kinyanjui; John (Laural, MD)
THE BOARD OF REGENTS OF THE NEVADA SYSTEM OF HIGHER EDUCATION ON BEHALF OF THE UNIVERSITY OF NEVADA, LAS VEGAS (Las Vegas, NV)
13/ 764,282
20130233716
February 11, 2013
GOVERNMENT FUNDING This invention was made with government support under DE-AC07-05ID14517 and DE-FC07-06ID14781 awarded by the Department of Energy. The government has certain rights in the invention.