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Platinum group metal-free catalysts for reducing the ignition temperature of particulates on a diesel particulate filter

  • US 8,318,629 B2
  • Filed: 10/14/2005
  • Issued: 11/27/2012
  • Est. Priority Date: 10/14/2004
  • Status: Active Grant
First Claim
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1. A catalyzed diesel particulate filter consisting essentially of:

  • a) a substrate for filtering particulates from diesel engine exhaust; and

    b) a catalyst composition, wherein said catalyst composition comprises;

    i) at least one first component selected from the group consisting of cerium, a lanthanide and mixtures thereof; and

    ii) at least one second component selected from the group consisting of copper, manganese and mixtures thereof,wherein said first component and said second component are in an oxide form after a calcination;

    wherein the catalyst composition does not comprise metal sulfates and platinum group metals, and further wherein the catalyst composition does not comprise a perovskite and the second component does not comprise cobalt.

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