Composite oxide having oxygen absorbing and desorbing capability
US5571492A · kind A · utility
31Cited by
2References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 2, 1995 |
| Grant date | Nov 5, 1996 |
| Priority date | — |
| Expiry date | Oct 2, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2004/82
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A composite oxide having oxygen absorbing and desorbing capability contains 4.99-98.99% by weight of cerium oxide, 1-95% by weight of zirconium oxide and 0.01-20% by weight of hafnium oxide. The composite oxide includes .PHI.' phase as a crystal phase and has oxygen absorbing and desorbing capability of at least 100 .mu.mol/g at 400.degree. to 700.degree. C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.