University of Nevada

Reactive Innovations, LLC

David W Hatchett

Kenneth R Czerwinski

Cassara Higgins

Janelle Droessler

Katherine Luebke

Michael C Kimble

Karen D Jayne

Kyle G Boutin

John Kinyanjui

Described herein are methods for recovering uranium tetrafluoride (UF) from uranium hexafluoride (UF) by directly dissolving UFin ionic liquids and recovering UF, which can be processed to obtain UO(s) or uranium metal.

Stoichiometric recovery of UF4 from UF6 dissolved in ionic liquids

Described herein are methods for recovering lithium metal, lithium hydride, or lithium hydroxide from lithium salts by dissolving the lithium salt in ionic liquids and applying a current to the solution.

Lithium recovery from lithium salts dissolved in ionic liquids

Described are methods for the recovery of uranium from uranium hexafluoride dissolved directly into ionic liquids.

Conversion of uranium hexafluoride and recovery of uranium from ionic liquids

A process for recovering a rare earth element. The process includes adding water and a nonaqueous acid to an ionic liquid, and dissolving an oxide of a first rare earth element directly into the ionic liquid to form an ionic solution comprising at least about 0.1 weight percent water, the acid and an ion of the first rare earth element. The process further includes applying a potential to the ionic solution to deposit the first rare earth element onto an electrode as a metal.

Processes for recovering rare earth elements

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) [MeNBu][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.

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Las Vegas, NV, United States of America

David W Hatchett