Multifunctional catalysts containing cerium, uranium and at least one other metal, for converting pollutants emitted by internal combustion engines, and their preparation
US5108978A · kind A · utility
8Cited by
1References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 24, 1990 |
| Grant date | Apr 28, 1992 |
| Priority date | — |
| Expiry date | May 24, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention concerns a multifunctional catalyst containing cerium, uranium and at least one metal, for converting pollutants emitted by internal combustion engines, and their preparation. A catalyst comprises a porous layer containing PA1 from about 20% to about 99% of at least one refractory oxide PA1 from about 0.8% to about 70% of at least one cerium oxide PA1 from about 0.1% to about 50% of at least one uranium oxide PA1 from about 0.1% to about 20% of a metal selected from the group made up of Pt, Rh, Pd, Ru, Ir and Au, and mixtures thereof. Applications are in the catalytic converter industry.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.