Catalyst for treatment of exhaust gases from internal combustion engines
US4426319A · kind A · utility
29Cited by
3References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 5, 1982 |
| Grant date | Jan 17, 1984 |
| Priority date | — |
| Expiry date | Mar 5, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The exhaust gases from internal combustion engines are catalytically oxidized/reduced, to remove CO, unburned hydrocarbons and NO.sub.x therefrom, utilizing an improved stable and long-lived catalyst which comprises (1) a support substrate, e.g., a monolithic or particulate support, and (2) an active phase deposited thereon, said active phase (2) comprising (i) cerium, (ii) iron, (iii) at least one of the metals gallium and/or yttrium, (iv) at least one of the metals platinum and/or palladium, and (v) at least one of the metals iridium and/or rhodium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.