Exhaust gas purification catalyst

Exhaust gas purification catalyst

  • CN 102,327,775 B
  • Filed: 05/29/2007
  • Issued: 12/02/2015
  • Est. Priority Date: 07/07/2006
  • Status: Active Grant
First Claim
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1. an exhaust gas purification catalyst, it possesses:

  • Composite oxide catalysts, it contains with general formula CDO 3the composite oxides of perovskite structure represented and the 2nd solid solution of Rh and/or Pt;

    With Composite oxide carrier, it supports described composite oxide catalysts, and contains with general formula E F 2o 41st composite oxides of the spinel structure represented, Described composite oxide catalysts has granular form, and described composite oxide carrier has granular form,Wherein, element E represents alkaline earth element and/or transition elements, and element F represents at least a kind of element in the group being selected from and being made up of Al, Mg and transition elements, and Elements C represents alkaline earth element, and element D represents at least a kind of element in the group being selected from and being made up of Zr, Hf and Ce.

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