Compound oxide having oxygen absorbing and desorbing capability and method for preparing same
US5478543A · kind A · utility
14Cited by
2References
16Claims
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Key dates
| Filing date | Jun 20, 1994 |
| Grant date | Dec 26, 1995 |
| Priority date | — |
| Expiry date | Jun 20, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J23/83
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A compound 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 compound oxide has an oxygen absorbing and desorbing capability of at least 100 .mu.mol/g at 400-700.degree. C. and a specific surface area of at least 10 m.sup.2 /g after heating at 900.degree. C. for 5 hours.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.