Method for producing an oxide catalyst for use in producing acrylonitrile or methacrylonitrile from propane or isobutane
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United States of America Patent
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Feb 4, 2003
Grant Date -
N/A
app pub date -
Nov 3, 2000
filing date -
Aug 28, 1998
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Abstract
Disclosed is a process for producing an oxide catalyst for use in producing (meth)acrylonitrile from propane or isobutane by ammoxidation in the gaseous phase, the oxide catalyst comprising a compound oxide containing Mo, V and Sb as essential component elements, which process comprises subjecting a solution or slurry, in water and/or an alcohol, of a raw-material mixture comprising a Mo compound, a V compound and an Sb compound as essential raw materials to a specific oxidation treatment using an oxidizing gas and/or an oxidizing liquid before subjecting the solution or slurry to drying and subsequent calcination. Further, also disclosed is a process for producing a base-treated oxide catalyst by treating the above-mentioned oxide catalyst with an aqueous basic solution.
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