Dual NOx adsorber catalyst system
US6391822B1 · kind B1 · utility
41Cited by
29References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 9, 2000 |
| Grant date | May 21, 2002 |
| Priority date | — |
| Expiry date | Feb 9, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2255/91
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A NOx adsorber catalyst system for treatment of gases in an exhaust discharge passage of an internal combustion engine comprising: a first adsorber catalyst supporting effective amounts of at least one noble metal component and a Ba component; and, a second adsorber catalyst supporting effective amounts of at least one noble metal catalyst, a Ba component, and a K component.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.