Patent ID: 7713504

Claim:
A method of making a mixed metal oxide or a mixture of a metal oxide compound and a mixed metal oxide compound comprising: a. preparing an aqueous feed solution comprising from about 10 to about 200 g/l of a first metal salt having a cation selected from the group consisting of Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W, and mixtures thereof and from about 10 to about 200 g/l of a second metal salt having a cation selected from the group consisting of alkali metals, Mg, alkaline earth metals, lanthanoids, Y, and mixtures thereof; b. spray drying the feed solution at a temperature between about 100° C. to about 600° C. to form an intermediate product composed of one of thin-filmed spheres and parts of spheres; and c. calcining the intermediate at a temperature between 500° C. to 1300° C. to produce mixed metal oxides or metal oxide compounds.