Oxidation and ammoxidation catalysis

Abstract

Oxidation and ammoxidation catalysts are disclosed which have the empirical formula Sb a V b Ti c O x , wherein a is at least 6, b is 1, and c is a number such that the ratio c/a is at least 0.5, and x is a number taken to satisfy the valence requirements of the Sb, V and Ti present in the catalyst. Such catalysts may be optionally supported on conventional supports, or may be unsupported.

I claim: 
     
       1. A catalyst for oxidation and ammoxidation of hydrocarbons consisting essentially of catalytic components having the empirical formula   Sb.sub.a V.sub.b Ti.sub.c O.sub.x     wherein a is at least 6, b is 1, and c is a number such that the ratio of c/a is .[.at least 0.5.]. .Iadd.from 0.75 to 3, .Iaddend.and x is a number taken to satisfy the valence requirements of the metal ions present.   
     
     
       2. A catalyst according to claim 1 wherein a is from 8 to 36. 
     
     
       3. A catalyst according to claim 1 wherein a is from 12 to 27. .[.4. A catalyst according to claim 2 wherein the ratio c/a is from 0.75 to 3..]. 
     
     
         . A catalyst according to claim .[.4.]. .Iadd.1 .Iaddend.wherein the 
     
     
        ratio c/a is from 1 to 2. 6. A catalyst according to claim .[.4.]. .Iadd.1 .Iaddend.further including a catalyst support comprising up to about 50% 
     
     
        of the total weight of the catalyst. 7. A catalyst according to claim 6 wherein said support comprises from about 5% to about 35% of the total 
     
     
        weight of the catalyst. 8. A catalyst according to claim 6 wherein the 
     
     
        support is derived from an Sb 2  O 5  sol. 9. A catalyst according to claim 6 wherein the support is derived from a silica sol.