Process for production of attrition resistant antimony oxide containing fluidized bed catalyst having controlled particle size distribution

Abstract

A process for producing an attrition resistant antimony oxide containing fluidized bed catalyst comprising particles within a controlled particle size distribution comprising: (a) preparing a slurry containing a pentavalent antimony compound, one or more polyvalent metal compounds and a silica sol as essential components; (b) adjusting the pH of the above slurry to not more than 7 and heating the slurry at a temperature of from about 40.degree. C to about 150.degree. C for at least 20 minutes while keeping the mixture in a slurry state to form a slurry containing pentavalent antimony; (c) spray-drying the thus obtained slurry to form substantially spherical particles; (d) separating extremely fine particles and/or coarse particles unsuitable for practical use from the above obtained particles and returning these separated particles to the slurry prior to the spray-drying in step (c) as they are or after the pulverization thereof; and (e) calcining the particles from which the extremely fine particles and/or coarse particles have been removed at a temperature of from about 400.degree. C to about 1100.degree. C.

Dependencies are inferred from the claim text.