Crush resistant adsorptive agglomerates of activated alumina
US5637547A · kind A · utility
9Cited by
9References
35Claims
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Key dates
| Filing date | Sep 22, 1995 |
| Grant date | Jun 10, 1997 |
| Priority date | — |
| Expiry date | Sep 22, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S502/51
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Activated alumina agglomerates having a crush resistance of at least 12 daN, measured on that fraction thereof having a mean diameter ranging from 3 to 4 mm, and an adsorptive capacity greater than 18% by weight, well adopted as adsorbents in a wide variety of purification processes, are prepared by agglomerating activated alumina particulates, maturing the resulting agglomerates in the presence of a complexing agent for the cation Al.sup.3+, and then thermally treating the matured agglomerates at a temperature ranging from about 100.degree. to 500.degree. C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.