Zoned catalyst system for reducing N2O emissions
US9764286B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 3, 2014 |
| Grant date | Sep 19, 2017 |
| Priority date | — |
| Expiry date | May 8, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02C20/10
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A catalyst system for reducing N2O emissions in the exhaust system of a vehicle is provided and comprises a support in communication with the exhaust gas stream, with the support including an exhaust gas inlet and an exhaust gas outlet. The support has at least one exhaust gas passage therethrough. The support, which may be in the form of a monolithic, multi-cell honeycomb construction, comprises a first catalytic zone and a second catalytic zone positioned downstream from the first zone. The first catalytic zone includes rhodium or a rhodium-enriched catalyst, while the second catalytic zone includes palladium or a palladium-enriched catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.