Patent ID: 9073044
Filing Date: 2015-07-07
Classification: B01D,B01J,Y02T

Abstract:
1. A production method of an exhaust gas purifying catalyst comprising: noble metal particles; first compounds supporting the noble metal particles; and second compounds formed on peripheries of the first compounds on which the noble metal particles are supported and covering both the noble metal particles and the first compounds, wherein simplexes or aggregates of the first compounds supporting the noble metal particles are included in sections partitioned by the second compounds, and the movement of the simplexes or aggregates is suppressed within the sections, the method comprising: a first step of preparing a composite colloidal solution in which the noble metal particles contact the first compounds; and a second step of forming the second compounds on the peripheries of the first compounds in the colloidal solution, the first compounds being brought into contact with the noble metal particles.