Method for manufacturing a high porous alumina having a large surface area and a low bulk density

US4175118A · kind A · utility

Assignee

• Condea Chemie GmbH · DE

Inventors

• Martin Wassermann · Hamburg, DE
• Klaus Noweck · Brunsbüttel, DE
• Arnold Meyer · Marne, DE

Key dates

• Filing date: May 23, 1978
• Grant date: Nov 20, 1979
• Expiry date: May 23, 1998

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01P2006/16
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A highly porous alumina having a large surface area and a low bulk density is prepared by hydrolyzing an aluminum alcoholate at a temperature of 40.degree. to 90.degree. C. in an aqueous solution containing 8 to 30% by weight of a compound which upon drying or activating splits out NH.sub.3 and/or CO.sub.2, there being used 0.5 to 3 parts by weight of the compound per 10 parts of aluminum alcoholate. The aluminum oxyhydrate paste formed by the hydrolysis is separated from the alcohol phase, in a given case is also purified, and subsequently dried or activated.