Patent ID: 9126846
Filing Date: 2015-09-08
Classification: B82Y,C01F,C01G,C01P

Abstract:
1. A method of synthesizing metal composite oxide, comprising: adding a dispersant to a ceria composite oxide nanoparticle colloid, wherein a mean particle diameter of the ceria composite oxide nanoparticle colloid to which the dispersant has been added is 10 nm or less; adding a dispersant to an alumina nanoparticle colloid, wherein a mean particle diameter of the alumina nanoparticle colloid to which the dispersant has been added is 10 nm or less; introducing separately the ceria composite oxide nanoparticle colloid to which the dispersant has been added and the alumina nanoparticle colloid to which the dispersant has been added into a high-speed stifling apparatus; synthesizing alumina-ceria composite oxide nanoparticles by allowing the ceria composite oxide nanoparticles and the alumina nanoparticles that have been introduced into the high-speed stifling apparatus to mutually react in a microscopic space; and applying a shearing force at a shear rate of 17000 sec