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

摘要

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 &mgr;m, and having a specific catalytic surface area of from 20 to 30 m²/g and an abrasion of 10, preferably 5, particularly preferably 0.5, % by weight in the turntable abrasion test.