Extracting rare earth metal from acidic solution by contacting with ionic liquid composition
US11396684B2 · kind B2 · utility
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Key dates
| Filing date | Dec 14, 2017 |
| Grant date | Jul 26, 2022 |
| Priority date | — |
| Expiry date | Jul 8, 2038 |
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.