Cerium oxide with pores having a lamellar structure, preparation method therefor and use thereof in catalysis
US5994260A · kind A · utility
28Cited by
17References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 1, 1999 |
| Grant date | Nov 30, 1999 |
| Priority date | — |
| Expiry date | Mar 1, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A cerium oxide with pores having a uniform lamellar structure. The pores may be at least partially arranged in substantially parallel directions and may also extend throughout the grain. The method for preparing said cerium oxide comprises heat treating a compound that essentially consists of cerium carbonate octahydrate. The atmosphere in which the treatment is performed includes an air/steam or oxygen/steam mixture with a steam volume fraction of at least 40%. Said cerium oxide is particularly useful as a catalyst, especially in motor vehicle post-combustion catalysis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.