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Catalyst for clarifying exhaust gas and method for preparation thereof, and exhaust gas clarification catalyst device for vehicle

  • US 20060287196A1
  • Filed: 08/20/2004
  • Published: 12/21/2006
  • Est. Priority Date: 09/12/2003
  • Status: Active Grant
First Claim
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1. A purification catalyst for exhaust gas, comprising an aluminum oxide supporting a Pd oxide, wherein the aluminum oxide is LnAlO3 in which Ln is a rare-earth element, and wherein crystal system of the aluminum oxide is trigonal or rhombohedral.

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