Palladium containing catalyst for treatment of automotive exhaust
US4960574A · kind A · utility
7Cited by
2References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 25, 1989 |
| Grant date | Oct 2, 1990 |
| Priority date | — |
| Expiry date | Jul 25, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
This application relates to a catalyst for treating automotive exhaust. The catalyst comprises a honeycomb carrier having deposited thereon a layer of alumina which has dispersed thereon lanthanum oxide, cerium oxide, palladium oxide and rhodium metal. The lanthanum oxide is present as crystallites that are less than about 25 Angstroms in size. The cerium oxide contains 3% lanthanum in the cerium oxide crystal lattice and the palladium oxide is present as crystallites which are less than about 20 Angstroms in size. A method of manufacturing the catalyst and process for using the catalyst are also disclosed and claimed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.