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Material for NOx trap support

  • US 20030040432A1
  • Filed: 08/15/2001
  • Published: 02/27/2003
  • Est. Priority Date: 08/15/2001
  • Status: Active Grant
First Claim
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1. A ceramic support for a NOx trap which includes a NOx storage component comprising an alkali metal, the ceramic support having a composition lying within a ternary system selected from the group consisting of Al2TiO5

  • MgTi2O5

    MgAl2O4 and Al2TiO5

    FeTiO5

    Al2O3, the ceramic support characterized by a modulus of rupture strength as measured on a solid rod of circular cross section of greater than 1000 pounds per square inch and a coefficient of thermal expansion (22-800°

    C.) of less than 20×

    10

    7


    C.

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