Patent ID: 8304366

Claim:
A hybrid oxidation catalyst system for use with remediating a lean emission from a vehicle, the catalyst system comprising: a noble metal catalyst having noble metal particles in a first ceramic layer disposed on a first substrate; and a base metal oxide catalyst disposed downstream of the noble metal catalyst, the base metal oxide catalyst comprising base metal oxide particles in a second ceramic layer disposed on a second substrate wherein the noble metal catalyst is effective to substantially prevent hydrocarbon or carbon monoxide inhibition of the base metal oxide catalyst when enhancing the NO+O 2 conversion effectiveness of the base metal oxide catalyst and the base metal oxide catalyst includes at least one of an amount of Mo ranging from 1.14 wt. % to 5 wt. % or W ranging from 1.67 wt. % to 3.4 wt. % of the base metal oxide catalyst remediating at least 20% of NO at temperatures ranging from 125° C. to 150° C.