Patent ID: 9682365
Date: 2017-06-20
CPC Classifications: B01D,B01J,F01N,Y02T

Claim:
1. An exhaust gas purification catalyst composition comprising: a carrier A comprising a zirconium phosphate; a catalytically active component (a) supported on the carrier A; a carrier B comprising an inorganic oxide porous material; and a catalytically active component (b) supported on the carrier B, wherein the carrier B is one or more inorganic oxide porous materials selected from a group consisting of silica, silica-alumina, ceria-zirconia, lanthanum, alumina, alumino-silicate, alumina-zirconia, alumina-chromia, alumina-ceria titania, and titania, the catalytically active component (a) comprises Rh, 50% or more of the catalytically active component (a) is supported on the carrier A, and 50% or more of the catalytically active component (b) is supported on the carrier B.