| abstract |
PROBLEM TO BE SOLVED: To provide a gas phase catalytic oxidation reaction method of hydrocarbons which can industrially and advantageously produce acrylonitrile, acrylic acid, maleic anhydride and the like useful as industrial raw materials in high yield. . Kind Code: A1 A gas phase catalytic oxidation reaction of hydrocarbons using a composite oxide catalyst represented by the following formula (1). ## STR1 ## In Mo a Cr b Bi c Fe d X e Y f Z g O n (1) ( Formula (1), X represents Al, Si, Zr, at least one or more elements selected from Ti , Y is an alkali metal, alkaline earth metal, Ni, Co, Zn, Ce, M n, Ru, Pd, Pt, Sb, Te, B, In, La, Represents at least one element selected from P, Sn, Pb and Cu; Z represents at least one element selected from W, V, Nb and Ta; 20 c = 0.01 to 10 d = 0.001 to 20 e = 0 to 100 f = 0 to 10 g = 0 to 5, and n is determined by the oxidation state of another element. ) |