| abstract |
Described is a gas phase comprising an inert carrier, an organic carbon source, and a catalyst precursor comprising a composite metal oxide comprising silver and vanadium, an inert carrier, and a catalytically active silver-vanadium oxide-bronze. A method of reacting with an oxidation catalyst, wherein the catalyst precursor is heat-treated in a gas atmosphere containing less than 10% by volume of oxygen at a temperature of at least 350 ° C., wherein the carbon source is placed in the catalyst precursor before the heat treatment. Adjust to a value below the critical amount with. The reduction of the carbon content is performed under the partial decomposition of the carbon source by combustion at a temperature of 80 to 200 ° C. in an oxygen-containing atmosphere. The resulting catalyst is used for gas phase partial oxidation of aromatic hydrocarbons to aldehydes, carboxylic acids, and / or carboxylic anhydrides. |