Rare earth and platinum group metal catalyst compositions
US4170573A · kind A · utility
34Cited by
2References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 7, 1978 |
| Grant date | Oct 9, 1979 |
| Priority date | — |
| Expiry date | Apr 7, 1998 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J23/63
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A catalyst composition comprising a composite of ceria, lanthana, and alumina and a catalytically-effective amount of one or more platinum group metals deposited on the composite is disclosed. The composite is prepared by depositing a cerium compound on a calcined admixture of the lanthana and the alumina and calcining the composite. The catalyst is capable of operating in the combustion of carbonaceous fuel at high temperatures, e.g., greater than 2400.degree. F. (1317.degree. C.), for extended periods of time such as 20 hours with low emissions of carbon monoxide and nitrogen oxides.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.