Process for passivating high activity transition metal sulfide catalysts
US4740491A · kind A · utility
13Cited by
10References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 16, 1985 |
| Grant date | Apr 26, 1988 |
| Priority date | — |
| Expiry date | Jan 16, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J38/08
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Catalysts having as their active component sulfides of vanadium, molybdenum and tungsten are contacted with ammonia or with an amine which in aqueous solution has a basic ionization constant greater than that of ammonium hydroxide to suppress deactivation of the catalysts by exposure to the atmosphere.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.