Pt-Pd diesel oxidation catalyst with CO/HC light-off and HC storage function
US7576031B2 · kind B2 · utility
101Cited by
23References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 9, 2006 |
| Grant date | Aug 18, 2009 |
| Priority date | — |
| Expiry date | Dec 30, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention is directed to a diesel oxidation catalyst for the treatment of exhaust gas emissions, such as the oxidation of unburned hydrocarbons (HC), and carbon monoxide (CO) and the reduction of nitrogen oxides (NOx). More particularly, the present invention is directed to a novel washcoat composition comprising two distinct washcoat layers containing two distinctly different ratios of Pt:Pd.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.