Ammonia slip catalyst
US9579638B2 · kind B2 · utility
15Cited by
22References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 30, 2014 |
| Grant date | Feb 28, 2017 |
| Priority date | — |
| Expiry date | Aug 5, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02A50/20
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Provided is an ammonia slip catalyst article having supported palladium in a top or upstream layer for oxidation of carbon monoxide and/or hydrocarbons, an SCR catalyst either in the top layer or in a separate lower or downstream layer, and an ammonia oxidation catalyst in a bottom layer. Also provided are methods for treating an exhaust gas using the catalyst article, wherein the treatment involves reducing the concentrations of ammonia and optionally carbon monoxide and/or hydrocarbons in the exhaust gas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.