| 摘要 |
PURPOSE:To provide an HC(hydrocarbon) eliminating member superior in durability. CONSTITUTION:The HC eliminating member 11 is composed of an adsorptiont layer 5 consisting essentially of zeolite, a porous HC oxidation layer 7 provided with Pd oxide whose catalytic performance is degraded due to contact with the zeolite under high temp. and a porous barrier layer 6 for preventing the Pd oxide from being brought into contact with the zeolite which is layered between the HC adsorptiont layer 5 and the HC oxidation layer 7. |
