Process for producing an alumina catalyst carrier
US4224302A · kind A · utility
12Cited by
7References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 5, 1979 |
| Grant date | Sep 23, 1980 |
| Priority date | — |
| Expiry date | Mar 5, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/21
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A catalyst carrier high in strength and suitable for use in internal combustion engines is produced by transforming a boehmite into .gamma.-alumina at a high temperature, transforming the .gamma.-alumina into .alpha.-alumina at a high temperature and sintering the .alpha.-alumina, boehmite having been prepared by forming a large number of agglomerates of adequate size from powdered aluminum hydroxide (Al.sub.2 O.sub.3.3H.sub.2 O) and contacting the agglomerates with water vapor at a high temperature and a high pressure to transform the aluminum hydroxide into boehmite.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.