Patent ID: 8034736

Claim:
A catalyst for synthesizing acrylonitrile having the composition represented by the following general formula: Fe a Sb b C c D d Te e F f X x Y y Z z O g (SiO 2 ) h (wherein, Fe represents iron, Sb represents antimony, Te represents tellurium, component C represents at least one element selected from the group consisting of copper, nickel and cobalt, component D represents at least one element selected from the group consisting of molybdenum, tungsten and vanadium, component F represents at least one element selected from the group consisting of phosphorous and boron, component X represents at least one element selected from the group consisting of tin, titanium, zirconium, niobium, tantalum, chromium, ruthenium, palladium, silver, aluminum, gallium, indium, thallium, germanium, arsenic, bismuth, lanthanum, cerium, praseodymium, neodymium and samarium, component Y represents at least one element selected from the group consisting of magnesium, calcium, strontium, barium, manganese, zinc and lead, component Z represents at least one element selected from the group consisting of lithium, sodium, potassium, rubidium and cesium, O represents oxygen, SiO 2 represents silica, a, b, c, d, e, f, x, y, z, g and h represent the atomic ratio of each element (silicon in the case of silica), when a=10, b=5 to 60, c=0.1 to 8.0, d=0.1 to 4.0, e=0.1 to 5.0, f=1.3 to 5.0, x=0 to 5, y=0 to 5, z=0 to 2, h=10 to 200 and g is the atomic ratio of oxygen required to satisfy the valence of each of the elements excluding silicon, and f/d=1 to 5).