Oxygen storage material for automotive catalysts and process of using
US6423293B1 · kind B1 · utility
12Cited by
7References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 6, 1996 |
| Grant date | Jul 23, 2002 |
| Priority date | — |
| Expiry date | Feb 1, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention is a mixed oxide oxygen storage material useful as a catalyst or catalyst washcoat. The mixed oxide is praseodymium oxide loaded onto a support of either cerium oxide or cerium-zirconium oxide. The praseodymium oxide is loaded on the support so that the resultant mixed oxide contains praseodymium and cerium in a molar ratio of 1:4 to 4:1. This mixed oxide may be loaded with a catalyst like palladium for use in automotive exhaust gas systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.