Patent ID: 6350421
Filing Date: 2002-02-26
Classification: B01D,B01J,F01N,Y10S

Abstract:
A nitrogen oxide storage material, comprising:at least one storage component for nitrogen oxides selected from the group consisting of particles of an oxide, carbonate and hydroxide of magnesium, calcium, strontium, barium, potassium or cesium, the particles having a mean particle diameter of less than 1 &mgr;m; and a support material, on which the storage component is provided, the support material being a member selected from the group consisting of doped cerium oxide, cerium/zirconium mixed oxide, calcium titanate, strontium titanate, barium titanate, barium stannate, barium zirconate, magnesium oxide, lanthanum oxide, praseodymium oxide, samarium oxide, neodymium oxide, yttrium oxide, and mixtures thereof.