SUPPORTED CATALYST FOR THE OXIDATION OF O-XYLENE AND/OR NAPHTHALENE HTHALIC ANHYDRIDE

摘要

Supported catalyst for the oxidation of o-xylene or naphthalene to phthalic anhydride, comprising an inert carrier and the active material applied thereto, which contains from 1 to 40 per cent by weight of vanadium pentoxide, from 60 to 98.84 per cent by weight of titanium dioxide and from 0.16 to 0.6 per cent by weight, based on titanium dioxide, of rubidium, the vanadium pentoxide content being from 0.05 to 4 per cent by weight, based on the (complete) catalyst.