ASC with platinum group metal in multiple layers
US11000838B2 · kind B2 · utility
3Cited by
5References
14Claims
0Family size
Inventors
Key dates
| Filing date | Dec 6, 2019 |
| Grant date | May 11, 2021 |
| Priority date | — |
| Expiry date | Dec 6, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A catalytic article for treating an exhaust gas stream containing particulate matter, hydrocarbons, CO, and ammonia, the article may include: (a) a substrate having an inlet end and an outlet end defining an axial length; (b) a first catalyst coating including: 1) a platinum group metal distributed on a molecular sieve, and 2) a base metal distributed on a molecular sieve; and (c) a second catalyst coating including: 1) a platinum group metal distributed on a molecular sieve, and 2) a base metal distributed on a molecular sieve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.