Patent ID: 10807073

Abstract:
The present invention provides a method for producing a catalyst to be used for a gas-phase catalytic ammoxidation reaction of propane, the method comprising a preparation step of dissolving or dispersing a raw material to thereby obtain a prepared raw material liquid, a first drying step of drying the prepared raw material liquid to thereby obtain a dried material, a calcination step of calcining the dried material to thereby obtain a composite oxide having a predetermined composition, an impregnation step of impregnating the composite oxide with a solution containing at least one specific element selected from the group consisting of tungsten, molybdenum, tellurium, niobium, vanadium, boron, bismuth, manganese, iron, antimony, phosphorus and rare earth elements to thereby obtain an impregnated composite oxide, and a second drying step of drying the impregnated composite oxide, wherein at least one of the impregnation step o and the second drying step is a step of impregnating the composite oxide or drying the impregnated composite oxide while stirring by a specific stirring power.