| 摘要 |
Disclosed is a process for producing an oxide catalyst comprising, as component elements, molybdenum (Mo), vanadium (V), at least one element selected from the group consisting of the two elements of antimony (Sb) and tellurium (Te), and niobium (Nb), wherein the process comprises providing an aqueous raw material mixture containing compounds of the component elements of the oxide catalyst, and drying the aqueous raw material mixture, followed by calcination, and wherein, in the aqueous raw material mixture, at least a part of the niobium compound as one of the compounds of the component elements is present in the form of a complex thereof with a complexing agent comprising a compound having a hydroxyl group bonded to an oxygen atom or a carbon atom. Also disclosed is a process for producing (meth)acrylonitrile or (meth)acrylic acid, which comprises performing the ammoxidation or oxidation of propane or isobutane in the gaseous phase in the presence of the oxide catalyst.
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