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Three-Way Catalyst Having a Upstream Multi-Layer Catalyst
Three-Way Catalyst Having a Upstream Multi-Layer Catalyst
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机译:具有上游多层催化剂的三效催化剂
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摘要
Disclosed herein is a layered, three-way conversion catalyst having the capability of simultaneously catalyzing the oxidation of hydrocarbons and carbon monoxide and the reduction of nitrogen oxides being separated in a front and rear portion is disclosed. Provided is a catalytic material of at least two front and two rear layers in conjunction with a substrate, where each of the layers includes a support, all layers comprise a platinum group metal component, and the rear bottom layer is substantially free of a ceria-containing oxygen storage component (OSC).
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