NO2 abatement composition with enhanced sulfur resistance
US6468484B1 · kind B1 · utility
10Cited by
5References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 31, 2000 |
| Grant date | Oct 22, 2002 |
| Priority date | — |
| Expiry date | Sep 3, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J37/0242
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A NOx adsorber composition comprising a substrate; and a washcoat, wherein said washcoat comprises a catalytic metal component, a trapping material, and a porous support, wherein said porous support comprises cerium oxide and an oxygenated metal selected from the group consisting of lanthanum oxide, yttrium oxide, neodymium oxide, and combinations comprising at least one of the foregoing oxygenated metals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.