Catalyst for purifying exhaust gas
US5894013A · kind A · utility
5Cited by
3References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 28, 1997 |
| Grant date | Apr 13, 1999 |
| Priority date | — |
| Expiry date | Aug 28, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S55/30
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A catalyst for purifying an exhaust gas includes a substrate, a catalyst carrier layer, a catalyst ingredient and a hydrocarbons supplier. The catalyst carrier layer is formed on the substrate. The catalyst ingredient is loaded on the catalyst carrier layer. The hydrocarbons supplier is disposed in the substrate, and supplies supplementary hydrocarbons into the catalyst carrier layer so as to securely react the supplementary hydrocarbons with NO.sub.x included in an exhaust gas. Hence, the catalyst can purify not only CO but also NO.sub.x over a wide temperature range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.