Thermally stable/highly reducible catalyst compositions comprising alumina and the oxides of cerium and zirconium
US5883037A · kind A · utility
34Cited by
16References
32Claims
0Family size
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Key dates
| Filing date | May 30, 1995 |
| Grant date | Mar 16, 1999 |
| Priority date | — |
| Expiry date | May 30, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Thermally stable/highly reducible catalyst compositions, well suited for the catalytic conversion of exhaust gases emanating from internal combustion engines notably vehicular exhaust gases, comprise alumina, the oxides of cerium praseodymium and zirconium, and, optionally, at least one other oxide of bismuth, of a rare earth, or of an element of group VIII of the Periodic Table, and exhibit a stabilized hydrogen-absorption capacity up to a temperature of at least 1,000.degree. C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.