Process for producing 1,4-naphthoquinone

Details Process for producing 1,4-naphthoquinone Process for producing 1,4-naphthoquinone

C - Chemistry, Metallurgy

07

C

260/396

C07C 50/12 (2006.01)

Patent

CA 1241012

ABSTRACT: A process for producing 1,4-naphthoquinone by vapour phase catalytic oxidation of naphthalene comprises catalytically reacting the naphthalene with oxygen-containing gas in a fixed catalytic layer of a catalyst composed essentially of catalytic components of vanadium oxide, an alkali metal sulfate and an alkali metal pyrosulfate carried on an inert carrier, wherein the oxygen-contain- ing gas which is supplied to the fixed catalytic layer of the catalyst heated to a temperature of at least 330C,contains at least 1 ppm of sulfur trioxide at the entrance of the fixed catalyst layer.

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