PGM nanoparticles TWC catalysts for gasoline exhaust gas applications
US11642658B2 · kind B2 · utility
2Cited by
2References
18Claims
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Key dates
| Filing date | Jul 26, 2019 |
| Grant date | May 9, 2023 |
| Priority date | — |
| Expiry date | Dec 13, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A three-way catalyst article, and its use in an exhaust system for internal combustion engines, is disclosed. The catalyst article for treating exhaust gas comprising: a substrate; and a first catalytic region on the substrate; wherein the first catalytic region comprises a first platinum group metal (PGM) component, wherein the first PGM component comprises PGM nanoparticles, wherein the PGM nanoparticles have an average particle size of about 1 to about 20 nm with a standard deviation (SD) no more than 1 nm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.