Catalyst article and the use thereof for filtering fine particles
US11285467B2 · kind B2 · utility
4Cited by
3References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 29, 2020 |
| Grant date | Mar 29, 2022 |
| Priority date | — |
| Expiry date | Sep 29, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A catalyst article and its use in an exhaust system for internal combustion engines is disclosed. The catalyst article comprises a substrate which is a wall-flow filter, a first catalyst composition, and a second catalyst composition. The first and second catalyst compositions each independently comprise an oxygen storage component (OSC) derived from a CeZr mixed oxide sol having a D90 of less than 1.3 micron and a particulate inorganic oxide having a D90 of from 1 to 20 microns.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.