Composition comprising cerium oxide and zirconium oxide having a specific porosity, preparation method thereof and use of same in catalysis
US10384954B2 · kind B2 · utility
2Cited by
4References
24Claims
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Key dates
| Filing date | Jul 2, 2010 |
| Grant date | Aug 20, 2019 |
| Priority date | — |
| Expiry date | Aug 6, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A composition including cerium and zirconium oxides, including at least 30 wt.-% cerium oxide is desired. Following calcination at a temperature of 900 DEG C. for 4 hours, the composition has two populations of pores, the diameters of the first population being centered around a value of between 5 nm and 15 nm for a composition including 30% to 65% cerium oxide or between 10 nm and 20 nm for more than 65% cerium oxide and the diameter of the second population being centered around a value of between 45 nm and 65 nm for 30% to 65% cerium oxide or between 60 nm and 100 nm for more than 65% cerium oxide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.