Exhaust system without a DOC having an ASC acting

专利名称：Exhaust system without a DOC having an ASC

acting as a DOC in a system with an SCRcatalyst before the ASC

发明人：Mikael Larsson申请号：US15184206申请日：20160616公开号：US099374B2公开日：20180410

专利附图：

摘要：Catalyst articles having a first zone containing a first SCR catalyst and a secondzone containing an ammonia slip catalyst (ASC), where the ammonia slip catalyst containsa second SCR catalyst and an oxidation catalyst, and the ASC has DOC functionality, wherethe first zone is located on the inlet side of the substrate and the second zone is locatedin the outlet side of the substrate are disclosed. The catalytic articles are useful forselective catalytic reduction (SCR) of NOx in exhaust gases, in reducing the amount ofammonia slip and in oxidizing organic residues. Exhaust systems containing the catalystarticles and methods of using the catalytic articles in an SCR process, where the amountof ammonia slip is reduced and hydrocarbon are oxidized by the ASC catalyst, are alsodescribed.

申请人：Johnson Matthey Public Limited Company

地址：London GB

国籍：GB

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