Method for reactivating palladium catalysts
US3959382A · kind A · utility
14Cited by
3References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 26, 1974 |
| Grant date | May 25, 1976 |
| Priority date | — |
| Expiry date | Nov 26, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/584
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Palladium catalysts employed in the hydrogenation of reducible cyclic organic compounds containing deleterious nitrogen impurities are reactivated according to a process comprising separating spent catalyst from the hydrogenation reaction mixture; contacting the separated spent catalyst in a liquid reaction medium with a reactivating agent selected from the group consisting of alkali metal and alkaline earth metal bicarbonates, carbonates, nitrates, chlorides, fluorides, hydroxides and mixtures thereof, to reactivate the catalyst; and recovering the reactivated catalyst for recycle to the hydrogenation reaction mixture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.