Exhaust gas purification catalyst
US11534737B2 · kind B2 · utility
0Cited by
1References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 16, 2019 |
| Grant date | Dec 27, 2022 |
| Priority date | — |
| Expiry date | Jun 27, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An exhaust gas purification catalyst including particles of a catalyst metal supported on secondary particles of an inorganic oxide, wherein when scanning transmission electron microscope-energy dispersive X-ray line analysis is performed from a surface of the secondary particles toward a center thereof, a support density of the catalyst metal on a surface side of the secondary particles is greater than the support density of the catalyst metal in a center part of the secondary particles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.