Abstract: A method for extracting a rare earth metal from a mixture of one or more rare earth metals, said method comprising countercurrently contacting an acidic solution of the rare earth metal with a composition which comprises an ionic liquid to form an aqueous phase and a non-aqueous phase into which the rare earth metal has been selectively extracted.
Type:
Grant
Filed:
June 14, 2019
Date of Patent:
July 2, 2024
Assignee:
Seren Technologies Limited
Inventors:
Peter Nockemann, Donnacha Brolly, Ena Bradley, Eadaoin McCourt
Abstract: A method for extracting a rare earth metal from a mixture of one or more rare earth metals, said method comprising contacting an acidic solution of the rare earth metal with a composition which comprises an ionic liquid to form an aqueous phase and a non-aqueous phase into which the rare earth metal has been selectively extracted, wherein the ionic liquid has the formula [Ca++][X?], where [X?] represents a phosphinate anion.
Type:
Grant
Filed:
June 14, 2019
Date of Patent:
April 16, 2024
Assignee:
Seren Technologies Limited
Inventors:
Peter Nockemann, Donnacha Brolly, Ena Bradley, Eadaoin Mccourt
Abstract: A method for extracting a rare earth metal from a mixture of one or more rare earth metals, said method comprising contacting an acidic solution of the rare earth metal with a composition which comprises an ionic liquid to form an aqueous phase and a non-aqueous phase into which the rare earth metal has been selectively extracted; recovering the rare earth metal from the non-aqueous phase; and processing the recovered rare earth metal into a rare earth metal oxide.
Type:
Grant
Filed:
June 14, 2019
Date of Patent:
August 2, 2022
Assignee:
Seren Technologies Limited
Inventors:
Peter Nockemann, Donnacha Brolly, Ena Bradley, Eadaoin McCourt
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