CATALYST FOR PRODUCING UNSATURATED NITRILE

摘要

A catalyst composition represented by the following experimental formula: Mo10BiaFebSbcNidCreFfGgHhKkXxYyOi(SiO2)j, which is for use in producing an usaturated nitrile through ammoxidation wherein F represents at least one element selected from the group consisting of zirconium, lanthanum, and cerium; G represents at least one element selected from the group consisting of magnesium, cobalt, manganese, and zinc; H represents at least one element selected from the group consisting of vanadium, niobium, tantalum, and tungsten; X represents at least one element selected from the group consisting of phosphorus, boron, and tellurium; Y represents at least one element selected from the group consisting of lithium, sodium, rubidium, and cesium; and the subscripts a to k, x, and y, which represent proportions of the atoms and the group of atoms, are such numbers that a=0.1 to 3, b=0.3 to 15, c=0 to 20, d=3 to 8, e=0.2 to 2, f=0.05 to 1, e/f > 1, g=0 to 5, h=0 to 3, k=0.1 to 1, x=0 to 3, y=0 to 1, i is the number of oxygen atoms resulting from the bonding of the above ingredients, and j=0 to 100.