Patent ID: 9242224
Filing Date: 2016-01-26
CPC Classification: B01J,C01B,C01F,C01P,C04B

Claim Text:
1. A method of making particles using a microwave generated plasma comprising: a. preparing a salt solution in water, in organic solvent, or in a mixture of water and organic solvent; b. generating precursor droplets from said salt solution using a feed injection device; c. introducing axially said precursor droplets into a microwave plasma torch; d. entraining said precursor droplets using at least two concentric laminar gas flows towards a microwave generated plasma; e. exposing said precursor droplets to high temperature within said microwave generated plasma; f. controlling residence time of said precursor droplets in said microwave generated plasma; g. controlling quenching rates of an exhaust gas of said microwave generated plasma in a gas chamber; h. filtering the exhaust gas of said microwave generated plasma; and i. extracting particles from said exhaust gas.