| 摘要 |
An oxidation catalyst composition produced by comprising mixing at least one crystalline composite oxide, as the first component, selected from the group consisting of (i) a crystalline composite oxide containing vanadium and phosphorus and showing the characteristic X-ray diffraction peaks as identified in the following Table A and (ii) a crystalline composite oxide containing vanadium and phosphorus and showing the characteristic X-ray diffraction peaks as identified in the following Table B, an aqueous solution, as the second component, containing vanadium and phosphorus, and silica sol, as the third component, to form an aqueous slurry, spray-drying the slurry, and calcining the solid particles thereby obtained: TABLE A-X-ray diffraction peaks -(Anticathode: Cu-K alpha ) -2 theta (+/-0.2 DEG ) -15.7 DEG -19.6 DEG -24.2 DEG -27.1 DEG -28.8 DEG -30.4 DEG - TABLE B-X-ray diffraction peaks -(Anticathode: Cu-K alpha ) -2 theta (+/-0.2 DEG ) -14.2 DEG -15.7 DEG -18.5 DEG -23.0 DEG -28.4 DEG -30.0 DEG -33.7 DEG -36.8 DEG -
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