Process for the production of 1,1,1-trifluoroethane
US5639924A · kind A · utility
2Cited by
16References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 29, 1994 |
| Grant date | Jun 17, 1997 |
| Priority date | — |
| Expiry date | Nov 29, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J27/128
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Process for synthesizing 1,1,1-trifluoroethane (143a) in the gaseous phase by reacting 1,1-defluoro-1-chloroethane in gaseous phase in the presence of a Cr catalyst. The process may be run isothermally or adiabatically, without co-feeding air or other oxygen containing gas, in the presence or absence of a Ni, Co, Zn or Mn cocatalyst for the Cr catalyst. The catalyst may be unsupported or supported with a support preferably selected from activated carbon, alumina and fluorided alumina. The formation of olefin byproduct can be kept to less than 10 ppm in accordance with the process of the invention.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.