Adiabatic Hydrofluorination of hydrochlorofluorocarbons
US5600038A · kind A · utility
1Cited by
11References
22Claims
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Key dates
| Filing date | Mar 24, 1995 |
| Grant date | Feb 4, 1997 |
| Priority date | — |
| Expiry date | Mar 24, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J27/128
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Process for adiabatically hydrofluorinating hydrochlorocarbons and hydrochlorofluorocarbons in the gaseous phase in the presence of a catalyst that is active at the initial reaction temperature and remains highly selective at the maximum reaction temperature, e.g., a Cr catalyst. The molar ratio of HF to starting compound is at least about 2.5:1. The initial reaction temperature is selected such that the HF in the feed is partially associated but not completely (HF).sub.6. The catalyst may be unsupported or supported.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.