Patent ID: 6723869
Filing Date: 2004-04-20
Classification: B01J,C07C,Y02P

Abstract:
A process for producing acrylonitrile, which comprises using a fluidized bed catalyst of a composition represented by the following empirical formula in the production of acrylonitrile by ammoxidation of propylene,Fea Sbb Moc Bid Ke Ff Gg Hh Qq Rr Tt Ox (SiO2)y wherein Fe, Sb, Mo, Bi and K are iron, antimony, molybdenum, bismuth and potassium, respectively; F is at least one element selected from the group consisting of magnesium, calcium, strontium, barium, manganese, cobalt, nickel, copper, silver, zinc and cadmium; G is at least one element selected from the group consisting of chromium, aluminum, gallium and indium; H is at least one element selected from the group consisting of yttrium, lanthanum, cerium, praseodymium, neodymium and samarium; Q is at least one element selected from the group consisting of titanium, zirconium, vanadium, niobium, tantalum, tungsten, germanium, tin and lead; R is at least one element selected from the group consisting of lithium, sodium, rubidium, cesium and thallium; T is at least one element selected from the group consisting of boron, phosphorus and tellurium; O is oxygen; Si is silicon; and affixes a, b, c, d, e, f, g, h, q, r, t, x and y are independently of one another an atomic ratio, provided that a is a number larger than 0, and when a=10, then b=5 to 60, c=5 to 50, d=0.15 to 5, e=0.1 to 5, f=2 to 35, g=0.05 to 10, h=0.05 to 10, h/c is larger than 0.02, q=0 to 10, r=0 to 5, t=0 to 5, x is a number of oxygen in a metal oxide formed by bonding of said respective components, and y=20 to 500; and in which iron antimonate exists as a crystal phase.