Patent ID: 8187562
Filing Date: 2012-05-29
Classification: B82Y,C01F,C01P,Y10S,Y10T

Abstract:
1. A method for producing a cerium dioxide nanopowder by flame spray pyrolysis, comprising dissolving a sufficient amount of cerium nitrate in acetone to prepare a precursor solution having 0.01 M to 0.1 M cerium nitrate, atomizing the precursor solution into microdroplets with an ultrasonic atomizer, transferring the microdroplets together with a carrier gas to a central portion of a high-temperature diffusion flame burner, subjecting the microdroplets to pyrolysis and oxidation in the central portion of the diffusion flame burner to produce a cerium dioxide nanopowder, and collecting the cerium dioxide nanopowder with a collector.