Three-way rare earth oxide catalyst
US6569392B1 · kind B1 · utility
21Cited by
10References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 2, 2000 |
| Grant date | May 27, 2003 |
| Priority date | — |
| Expiry date | Feb 2, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention is a method of manufacturing a three-way catalyst and the catalyst as well as its use for treating exhaust gas generated by a gasoline internal combustion engine. The catalyst composition comprises a mixture of particles of three different materials. More specifically, it includes a mixture of calcined ceria/zirconia particles impregnated with platinum together with palladium, other calcined ceria/zirconia particles impregnated with only rhodium precious metal, and alumina particles not impregnated with precious metal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.