Fluidized-bed catalyst for propylene ammoxidation to acrylonitrile

Abstract

A catalyst for ammoxidation of propylene to acrylonitrile, comprising a) a catalytic composition represented by the following general formula: A.sub.a B.sub.b C.sub.c D.sub.d Na.sub.e Fe.sub.f Bi.sub.g Mo.sub.h O.sub.x wherein A represents K, Rb, Cs, Tl, or a mixture thereof, B represents Mn, Mg, Sr, Ca, Ba, or a mixture thereof, C represents P, As, B, Sb, Cr, W, V, or a mixture thereof, and D represents one of the following groups: 1) Ni alone, 2) Co alone, 3) Ni and one selected from Li, Pr, Nd, or a mixture thereof, 4) Co and one selected from Li, Pr, Nd, or a mixture thereof, 5) Ni, Co and one selected from Li, Pr, Nd, or a mixture thereof, and a=0.001.about.2.0, b=0.about.4.5, c=0.01.about.8.0, d=0.01.about.22.0, e=0.01.about.0.7, f=0.01.about.8.0, g=0.01.about.6.0, h=8.about.16, and x=number of oxygen atoms required to satisfy the valence requirement of the ther elements present, and b) a silica carrier

Dependencies are inferred from the claim text.