Extraction of selected platinum-group metals from supported catalyst
US11427887B2 · kind B2 · utility
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19Claims
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Key dates
| Filing date | Nov 26, 2018 |
| Grant date | Aug 30, 2022 |
| Priority date | — |
| Expiry date | Feb 29, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Disclosed herein is a method for extracting precious metals from supported catalysts. The precious metal in one embodiment is rhodium. The supported catalyst may be from equipment, such as a used catalytic converter. The method is carried out at low temperature, and does not require harsh conditions, such as the use of a strong acid. The method involves contacting the catalytic material with a polar molecule and a reactive gas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.