| 摘要 |
<p>Preparing metallic oxide powders having Brunauer-Emmett-Teller (BET) surface, comprises reacting an aerosol with oxygen and separating gaseous material powder, where at least one aerosol raw material and at least one atomization gas are provided via a nozzle and a multi-material nozzle, respectively, the volume related average diameter of the aerosol is 30-100 mu m and the number of aerosol drops that are larger than 100 mu m amounts up to 10%. Preparation of metallic oxide powders having Brunauer-Emmett-Teller (BET) surface of at least 20 m2>/g comprises reacting an aerosol with oxygen in a reaction area at above 700[deg]C and separating gaseous material powder, where at least one of aerosol raw material, in liquid form or as solution, is provided via a nozzle and at least one atomization gas is provided via a multi-material nozzle, the volume related average diameter D30 of the aerosol is 30-100 mu m and the number of aerosol drops, which are larger than 100 mu m, amounts up to 10%, related to the total number of the drops. An independent claim is included for the metallic oxide powder obtained by the method.</p> |
