For the aging-resistant catalyst article of internal combustion engine

For the aging-resistant catalyst article of internal combustion engine

  • CN 102,405,103 B
  • Filed: 02/19/2010
  • Issued: 01/13/2016
  • Est. Priority Date: 02/20/2009
  • Status: Active Grant
First Claim
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1. the catalyst article used in internal combustion engine, comprises:

  • First Catalytic Layer, it is formed in substrate, and wherein said first Catalytic Layer comprises and is immersed in without the palladium on the oxygen storage components of ceria and is immersed in platinum on Refractory metal oxides, andSecond Catalytic Layer, it is formed in described first Catalytic Layer, and described second Catalytic Layer comprises the rhodium on the platinum be immersed on oxygen storage components and the aluminium oxide being immersed in zirconia-coated or yittrium oxide coating, and wherein said second Catalytic Layer does not contain palladium,Wherein said catalyst article reduces effectively from the nitrogen oxide in the waste gas of described internal combustion engine.

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