Stabilized crystalline alumina compositions
US5877106A · kind A · utility
6Cited by
7References
8Claims
0Family size
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Key dates
| Filing date | Jan 3, 1997 |
| Grant date | Mar 2, 1999 |
| Priority date | — |
| Expiry date | Jan 3, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S977/776
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
New thermally- and hydrothermally-stable .delta.-alumina compositions stabilized with an oxide of silicon, germanium, phosphorus, arsenic or a mixture thereof and methods of preparation of same are provided. Also provided are catalyst supports and catalysts made using these stabilized .delta.-alumina compositions, methods for making same, and methods for treating the exhaust gas from an internal combustion engine using such catalysts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.