Sud-Chemie Ag

Norbert Von Thienen

Hansjorg Sinn

Hansj&ouml;rg Sinn

A process for the production of an aluminum oxide composition which includes subjecting an aluminoxane with a basic structural element of &mdash;Al&mdash;O&mdash;Al&mdash; or a basic oligomeric structural element of &mdash;Al&mdash;O&mdash;Al&mdash;O&mdash;Al&mdash;O&mdash;Al&mdash; to mild hydrolysis with at least one inert gas moistened below its dew point to produce a composition and subjecting the composition to thermolysis at temperatures from about 300 to about 900&deg; C.

Process for preparing aluminum oxide masses with very narrow pore radius distribution

An aluminum oxide mass characterized by a specific surface area greater than or equal to 70 m.sup.2 /g and a narrow pore radius distribution, with at least 90% of the pore radii being approximately 0.5 to 2.5 nm, preferably approximately 1.7 to 2.2 nm.

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Hamburg, Germany

Norbert Von Thienen