Method for recovering ruthenium
US8454914B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Nov 20, 2007 |
| Grant date | Jun 4, 2013 |
| Priority date | — |
| Expiry date | Jan 7, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An object of the present invention is to provide a process for recovering ruthenium at a sufficient recovery rate from a solid in which a ruthenium compound is supported on a carrier. The present invention relates to a process for recovering ruthenium, comprising the following steps (1) to (3): (1) bringing a solid in which a ruthenium compound is supported on a carrier, into contact with a reducing gas, to thereby reduce the ruthenium compound; (2) cooling the solid obtained in the step (1) to 250° C. or lower under an atmosphere of a non-oxidizing gas; and (3) mixing the solid obtained in the step (2) with an oxidizing solution, to thereby dissolve ruthenium in the solution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.