Catalytic converter and method for cleaning exhaust gas
US6641785B1 · kind B1 · utility
24Cited by
8References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 16, 2000 |
| Grant date | Nov 4, 2003 |
| Priority date | — |
| Expiry date | Jan 5, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention relates to a catalytic converter and a method for cleaning the exhaust gas from an internal combustion engine which is operated with excess air. The catalytic converter has an active material made from the oxides TiO2, V2O5, CaO and SiO2, as well as WO3 and/or MoO3. An active material of this type has the property of using the SCR method to reduce to equal extents the levels of nitrogen oxides and hydrocarbons. The CO oxidation activity of a material of this type can be increased by metering in elements selected from the group consisting of Pt, Pd, Rh, Ru and Ir in any desired inorganic form.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.