Patent ID: 9266092
Filing Date: 2016-02-23
CPC Classification: B01D,B01J,F01N,Y02A,Y02T

Claim Text:
1. An automotive catalyst composite comprising: a catalytic material on a carrier, the catalytic material comprising a two-metal layer that comprises: a rhodium component supported by a first support comprising a refractory metal oxide component and optionally further a first ceria-zirconia composite; a palladium component supported by a second support comprising a second ceria-zirconia composite; one or more of a promoter, stabilizer, or binder; wherein the catalytic material is effective for three-way conversion (TWC) to substantially simultaneously oxidize carbon monoxide and hydrocarbons and reduce nitrogen oxides, and wherein the amount of the total of the first ceria-zirconia composite, if present, and the second ceria-zirconia composite in the two-metal layer is equal to or greater than the amount of the refractory metal oxide component.