Granular active alumina with high apparent density and high mechanical durability
US4083911A · kind A · utility
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5Claims
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Key dates
| Filing date | Apr 18, 1975 |
| Grant date | Apr 11, 1978 |
| Priority date | — |
| Expiry date | Apr 18, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J37/0009
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Granular active alumina with high mechanical durability is made by activation of an aluminum hydroxide with an apparent density in the green granular condition of at least 2.20g/cm.sup.3. The green aluminum hydroxide is subjected to compacting by dry compression before activation by a usual heat treatment. Compacting is preferably by running between two rollers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.