Catalyst article having high local rhodium concentration
US12343707B2 · kind B2 · utility
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16References
20Claims
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Key dates
| Filing date | Feb 22, 2023 |
| Grant date | Jul 1, 2025 |
| Priority date | — |
| Expiry date | Oct 8, 2043 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2235/30
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention provides a catalyst article for treating exhaust gas comprising: a substrate comprising an inlet end and an outlet end with an axial length L; a first catalytic region comprising support material particles; at least some of the support material particles are rhodium-supporting support material particles having rhodium supported thereon at a concentration of from 0.001 to 3.5 wt. %, based on the weight of the rhodium-supporting support material particle; and the rhodium is present at a loading of up to 20 g/ft3 relative to the first catalytic region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.