Catalyst for oxidation of propylene

Abstract

A catalyst for the oxidation of propylene, said catalyst having the composition represented by the following formula Mo.sub.a W.sub.b Bi.sub.c Fe.sub.d A.sub.e B.sub.f C.sub.g D.sub.h O.sub.x wherein A represents at least one element selected from the group consisting of nickel and cobalt, B represents at least one element selected from the group consisting of alkali metals, alkaline earth metals and thallium, C represents at least one element selected from the group consisting of phosphorus, arsenic, boron and niobium, D represents at least one element selected from the group consisting of silicon, aluminum and titanium, a, b, c, d, e, f, g, h, and x respectively represent the atomic ratios of Mo, W, Bi, Fe, A, B, C, D, and O, a is from 2 to 12, b is from 0 to 10, the sum of a and b is 12, c is from 0.1 to 10.0, d is from 0.1 to 10.0, e is from 2 to 20, f is from 0.005 to 3.0, g is from 0 to 4, h is from 0.5 to 15 and x is a number determined by the atomic valences of the individual elements, and being molded in the shape of a hollow cylinder having an outside diameter of 3.0 to 10.0 mm, an inside diameter 0.1 to 0.7 times the outside diameter and a length 0.5 to 2.0 times the outside diameter.

Dependencies are inferred from the claim text.