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US 7,125,538 B2Granted
Alumina and methods for preparing the same
AssigneeAxens
InventorsJean-Luc Le Loarer, Christophe Nedez
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Abstract
The invention provides alumina agglomerates of the type obtained by dehydrating an aluminum hydroxide or oxyhydroxide, agglomerating the alumina obtained, hydrothermally treating the agglomerates and calcining. The invention also provides a catalyst support, an adsorbent material and a catalyst constituted by said agglomerates. The invention also provides methods for preparing said agglomerates.
Claims20
Alumina agglomerates of the type obtained by dehydrating an aluminum hydroxide or oxyhydroxide, agglomerating the alumina obtained, hydrothermally treating the agglomerates and calcining, wherein:
- they have a specific surface area in the range 90 m2/g to 220 m2/g;
- they have a V37 Å in the range 40 ml/100 g to 65 ml/100 g;
- they have a V200 Å of 12 ml/100 g or more;
- and
- they have a specific surface area/V200 Å ratio of 10 or less.
2 more elements
Dependencies are inferred from the claim text.