Supported catalyst for the oxidation of o-xylene or...

Details Supported catalyst for the oxidation of o-xylene or... Supported catalyst for the oxidation of o-xylene or...

C - Chemistry, Metallurgy

07

D

260/365

C07D 307/89 (2006.01) B01J 23/04 (2006.01) B01J 23/22 (2006.01) C07C 51/16 (2006.01) C07C 63/14 (2006.01)

Patent

CA 1057764

ABSTRACT OF THE DISCLOSURE A process for the catalytic oxidation of o-xylene or naphthalene with air to form phthalic anhydride wherein a supported catalyst is used comprising an inert nonporous carrier and applied thereto a thin layer of catalytically active material which comprises from 1 to 40% by weight of vanadium pentoxide and from 60 to 99% by weight of anatase and which has a vanadium pentoxide content of from 0.05 to 4% by weight based on the supported catalyst wherein the catalytically active material contains from 0.01 to 0.15% by weight of rubidium or caesium in the form of a compound devoid of sulfur, based on anatase.

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