Patent ID: 11890594
Assignee: UOP LLC
Field: Chemical engineering (Chemistry)
Classification: CPC B  C  Y | IPC B  C

Claim 2:
3. The mixed-metal oxide catalyst of claim 1, wherein the catalyst precursor in step (a) was produced by:
preparing a slurry comprising a molybdenum compound, a vanadium compound, at least one of a niobium compound and a tantalum compound, and at least one of a tellurium compound and an antimony compound;
optionally heating the slurry at a temperature of from about 60° C. to about 90° C.;
optionally adjusting the pH of the slurry from about 2 to about 4; and
hydrothermally treating the catalyst precursor at a temperature from about 150° C. to about 250° C. for about 10 to about 100 hours;
wherein the compounds are metallic elements, salts, acids, oxides, hydroxides, oxyhalides or mixtures thereof.