Patent ID: 6596897
Filing Date: 2003-07-22
Classification: B01J,C07C,Y02P

Abstract:
A fluidized-bed catalyst for producing acrylonitrile by the ammoxidation of propylene, which consists of a silica carrier and a composite having the following formula:AaCcDdNafFegBihMiMo12Ox wherein A is selected from the group consisting of potassium, rubidium, cesium, samarium, thallium and mixtures thereof;C is selected from the group consisting of phosphorus, arsenic, boron, antimony, chromium and mixtures thereof; D is nickel, cobalt or mixtures thereof; M is vanadium or a mixture of vanadium and tungsten; a is 0.01-1.0, c is 0.01-2.0, d is 0.01-12, f is 0.2-0.7, g is 0.01-8, h is 0.01-6, i is 0.01-9, x is the total number of the oxygen atom for meeting the requirement of the valence of the elements; and wherein the content of the carrier in the catalyst is 30-70% by weight.