Patent ID: 11883797
Assignee: CATALER CORPORATION
Field: Chemical engineering (Chemistry)
Classification: CPC B  F | IPC B  F

Claim 0:
1. An exhaust gas purification catalytic device, comprising
a substrate, a first catalytic coating layer on the substrate, and a second catalytic coating layer on the first catalytic coating layer, wherein:
the first catalytic coating layer comprises inorganic oxide particles, palladium supported on the inorganic oxide particles, and a barium compound,
the second catalytic coating layer comprises alumina particles and rhodium supported on the alumina particles, and
the ratio (MBa/MRh) of the mass (MBa) of barium in the first catalytic coating layer to the mass (MRh) of rhodium in the second catalytic coating layer is 5.0 or greater and 60.0 or less.