Selective catalytic reduction catalyst systems

Selective catalytic reduction catalyst systems

  • CN 105,188,925 A
  • Filed: 03/13/2014
  • Published: 12/23/2015
  • Est. Priority Date: 03/14/2013
  • Status: Active Application
First Claim
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1. one kind for removing SCR (SCR) catalyst mixing system of NOx from engine exhaust, described system comprises and is arranged in the first SCR catalyst composition in described system and the second SCR catalyst composition, when being exposed to ammonia, described first SCR catalyst composition had than the described second carbon monoxide-olefin polymeric DeNOx response time faster, and described second SCR catalyst composition has the stable state DeNOx performance higher than described first carbon monoxide-olefin polymeric.

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