Catalyst and use thereof in treating internal combustion engine exhaust gases
US4492770A · kind A · utility
37Cited by
3References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 11, 1981 |
| Grant date | Jan 8, 1985 |
| Priority date | — |
| Expiry date | Dec 11, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Provided is an improved catalyst and a process employing same in the treatment of exhaust gases generated by internal combustion engines. The catalyst comprises a support and an active phase comprising copper, cerium and/or iron, at least one metal selected from the group consisting of platinum and palladium, and at least one metal selected from the group consisting of iridium and rhodium. The catalyst is particularly active in the removal of carbon monoxide, unburned hydrocarbons and nitrogen oxides generally present in the exhaust gases of an internal combustion engine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.