Catalyst
US5480854A · kind A · utility
27Cited by
6References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 10, 1993 |
| Grant date | Jan 2, 1996 |
| Priority date | — |
| Expiry date | Dec 10, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A50/20
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A reaction comprising the oxidation of carbon monoxide to carbon dioxide, eg in vehicle exhausts, employs a catalyst composed of metal oxide, eg ceria, particles among which are uniformly incorporated noble metal particles, the particles having such a high interaction that, without hydrogen reduction pre-treatment, the catalyst exhibits the formation of anionic vacancies on the metal oxide surface at a temperature lower than does the corresponding catalyst prepared by impregnation. The catalyst employed is preferably prepared by co-precipitation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.