Material based on tungsten carbide(s), catalyst and process useful for the hydrogenation of an aromatic nitro or nitroso derivative employing this catalyst
US5646085A · kind A · utility
1Cited by
4References
6Claims
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Key dates
| Filing date | Jul 8, 1994 |
| Grant date | Jul 8, 1997 |
| Priority date | — |
| Expiry date | Jul 8, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C209/36
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to a process and a catalyst for hydrogenation of aromatic nitro or nitroso (nitrosated) compounds. The process, useful in hydrogenation, especially in the liquid phase, of compounds, nitroaromatic ones in particular, is defined in that the said compound is hydrogenated in the presence of tungsten carbide, the partial pressure of hydrogen being at least equal to two atmospheres (2.times.10.sup.5 pascals). The process also has application to organic synthesis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.