Nitrogen oxides storage catalysts containing cobalt
US7811536B2 · kind B2 · utility
0Cited by
7References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 21, 2006 |
| Grant date | Oct 12, 2010 |
| Priority date | — |
| Expiry date | Jul 14, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2255/20746
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Nitrogen oxides (NOx) storage catalysts comprising cobalt and barium with a lean NOx storage ratio of 1.3 or greater. The NOx storage catalysts can be used to reduce NOx emissions from diesel or gas combustion engines by contacting the catalysts with the exhaust gas from the engines. The NOx storage catalysts can be one of the active components of a catalytic converter, which is used to treat exhaust gas from such engines.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.