Exhaust gas purifying catalyst
US8168560B2 · kind B2 · utility
15Cited by
9References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 4, 2006 |
| Grant date | May 1, 2012 |
| Priority date | — |
| Expiry date | Dec 17, 2026 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2255/2092
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An exhaust gas purifying catalyst is provided which includes a catalyst substrate and a catalyst coating layer. The catalyst coating layer is formed on the catalyst substrate and contains a noble metal and a refractory inorganic oxide. The catalyst coating layer has a layered structure including an A-layer and a B-layer. The A-layer contains Pd and Pt as the noble metal in a weight ratio of 3:1 to 20:1. The B-layer includes Rh as the noble metal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.