| 摘要 |
An oxide catalyst for use in the vapor-phase catalytic oxidation or vapor-phase catalytic ammoxidation of propane or isobutane, which comprises an oxide containing, as constituent elements, molybdenum (Mo), vanadium (V), niobium (Nb), and antimony (Sb) in a specific atomic ratio and has a degree of reduction of 8 to 12% and a specific surface area of 5 to 30 m2/g. Also provided is a process for efficiently producing the catalyst.
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