Rare earth metal oxide process including extracting rare earth metal from acidic solution with an ionic liquid composition
US11401579B2 · kind B2 · utility
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Key dates
| Filing date | Jun 14, 2019 |
| Grant date | Aug 2, 2022 |
| Priority date | — |
| Expiry date | Jun 14, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.