Exhaust gas purifying catalyst and process for purifying exhaust gas
US7265073B2 · kind B2 · utility
5Cited by
5References
13Claims
0Family size
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Key dates
| Filing date | Apr 15, 2004 |
| Grant date | Sep 4, 2007 |
| Priority date | — |
| Expiry date | Apr 24, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An exhaust gas purifying catalyst formed by having a first rhodium-containing catalyst layer, a second zeolite-containing catalyst layer, and a third palladium-containing catalyst layer superposed sequentially on a carrier, and a process for purifying the exhaust gas from an internal combustion engine by using the catalyst. A catalyst possessing durability and excelling in the ability to adsorb hydrocarbon, the ability to purify, and the three-way performance is provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.