Catalytic process for the preparation of trifluoroacetaldehyde
US4579976A · kind A · utility
9Cited by
4References
8Claims
0Family size
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Key dates
| Filing date | Dec 7, 1984 |
| Grant date | Apr 1, 1986 |
| Priority date | — |
| Expiry date | Dec 7, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C45/63
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
There is disclosed a continuous catalytic process for the preparation of trifluoroacetaldehyde through fluorination in the gaseous phase of trichloroacetaldehyde in a single reaction zone at a temperature between 230.degree. C. and 260.degree. C., on a catalyst comprising a gamma alumina impregnated by Cr.sub.2 O.sub.3 in an amount of 1.5 to 4 atoms of chromium per liter of alumina and activated at a temperature between 300.degree. C. and 400.degree. C. by a mixture of hydrofluoric acid and 1,1,2-trichloro-1,2,2-trifluoro-ethane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.