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Three-Way Catalyst Having a Upstream Multi-Layer Catalyst

机译:具有上游多层催化剂的三效催化剂

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).
机译:本文公开了一种层状三效转化催化剂,其具有同时催化烃类和一氧化碳的氧化并且还原在前部和后部分离的氮氧化物的能力。提供了至少两个前层和两个后层与基材结合的催化材料,其中每个层包括载体,所有层均包含铂族金属组分,并且后底层基本不含二氧化铈。包含储氧成分(OSC)。

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