Catalytic method of replacing halogen in halocarbons
US5817896A · kind A · utility
6Cited by
1References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 11, 1997 |
| Grant date | Oct 6, 1998 |
| Priority date | — |
| Expiry date | Mar 11, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C17/00
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
As replacements for chlorofluorcarbons, hydro(chloro)fluorocarbons are synthesized by hydrogenating chlorofluorocarbons over a Pd/ZnO/.gamma.--Al.sub.2 O3 catalyst. The ZnO is partially reduced before use and assists the Pd to function catalytically for days instead of hours despite the evolution of halogen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.