Ammoxidation catalyst composition, and process for producing acrylonitrile or methacrylonitrile using same (Ammoxidation catalyst composition, and process for producing acrylonitrile or methacrylonitrile using the same)

摘要

An ammonia containing an oxide catalyst composition represented by the following formula used for the production of methacrylonitrile from isobutene or t-butanol to propylene from propylene by ammoxidation reaction of isobutene or t-butanol An oxidation reaction catalyst composition is disclosed:;Mo₁₂(Bi_One-_aCe_a)_bFe_cNi_dX_eY_fO_g;Wherein X is at least one element selected from magnesium and zinc, Y is at least one element selected from potassium, rubidium and cesium, a is a number of 0.6 to 0.8, b is a number of 0.5 to 2, c Is a number from 0.1 to 3, d is a number from 4 to 10, e is a number from 0 to 3, f is a number from 0.01 to 2, and g is a number determined by the valence required of another element present ]. [0052] Not only can acrylonitrile or methacrylonitrile be produced at a high yield by using the catalyst composition for ammoxidation of the present invention, but even after the execution of the production process is carried out for an extended period of time, Or the yield of methacrylonitrile can be very effectively suppressed.