Catalyst for purifying exhaust gas from internal combustion engine and purifying method thereof
US5968870A · kind A · utility
16Cited by
8References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 27, 1997 |
| Grant date | Oct 19, 1999 |
| Priority date | — |
| Expiry date | Oct 27, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2255/20707
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A catalyst being formed of a porous supporter supporting alkali metals, Ti and a noble metal, or further supporting at least one of rare earth metal and magnesium, being disposed in a flow passage of an internal combustion engine, and being used to purify NOx contained in the exhaust gas. The above catalyst has NOx resistance to exhaust gas burnt with a rich condition and with a lean condition and a high resistivity to poisoning by SOx.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.