Mixed cerium- and zirconium-based oxide
US11583831B2 · kind B2 · utility
1Cited by
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16Claims
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Key dates
| Filing date | Dec 22, 2017 |
| Grant date | Feb 21, 2023 |
| Priority date | — |
| Expiry date | Feb 26, 2038 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention relates to a mixed oxide of aluminium, of zirconium, of cerium, of lanthanum and optionally of at least one rare-earth metal other than cerium and lanthanum that makes it possible to prepare a catalyst that retains, after severe ageing, a good thermal stability and a good catalytic activity. The invention also relates to the process for preparing this mixed oxide and also to a process for treating exhaust gases from internal combustion engines using a catalyst prepared from this mixed oxide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.