Patent ID: 7510693

Claim:
Process for the production of a metal oxide powder having a BET surface area of at least 20 m 2 /g comprising reacting an aerosol with oxygen in a reaction space at a reaction temperature of more than 700Â° C. and then separating the resulting powder from gaseous substances in the reaction space, wherein the aerosol is obtained by atomising using a three-component nozzle or four-component nozzle at least one starting material, either as such in liquid form or in solution, and at least one atomising gas, the volume-related mean drop diameter D 30 of the aerosol is from 30 to 100 Î¼m, the number of aerosol drops larger than 100 Î¼m is up to 10%, based on the total number of drops, and two or three separate solutions which contain the same or different starting materials, in the same or different solvents, in the same or different concentrations are atomised with the three-component nozzle or four-component nozzle, in addition to the atomising gas.