Catalyst consisting of a hollow cylindrical carrier having a catalytically active oxide material applied to the outer surface of the carrier, and process for using said catalyst

US5910608A · kind A · utility

Assignee

• BASF SE

Inventors

• Andreas Tenten · Maikammer, DE
• Peter Weidlich · Mannheim, DE
• Gerd Linden · Heidelberg, DE

Key dates

• Filing date: Jun 4, 1997
• Grant date: Jun 8, 1999
• Expiry date: Jun 4, 2017

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S502/523
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A coated catalyst which consists of a hollow cylindrical carrier and a catalytically active oxide material applied to the outer surface of the carrier, the applied catalytically active oxide material being applied in a coat thickness of from 10 to 1000 .mu.m, and having a specific catalytic surface area of from 20 to 30 m.sup.2 /g and an abrasion of <10, preferably <5, particularly preferably <0,5, % by weight in the turntable abrasion test. The catalyst is useful in the preparation of acrylic acid by the gas phase oxidation of acroleins.