Inorganic mixed oxide and catalyst for purification of exhaust gas using the same
US8043992B2 · kind B2 · utility
8Cited by
10References
6Claims
0Family size
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Key dates
| Filing date | Oct 17, 2008 |
| Grant date | Oct 25, 2011 |
| Priority date | — |
| Expiry date | Oct 17, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2991
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A particulate inorganic mixed oxide comprising: aluminum; zirconium; cerium; lanthanum and an additional element selected from the group consisting of neodymium and praseodymium, wherein the inorganic mixed oxide has at least 80% of primary particles with article diameters of 100 nm or less, and at least a part of the primary particles have an enriched surface region where the additional element is locally increased in a surface layer portion thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.