Nox storage materials and traps resistant to thermal aging

Details Nox storage materials and traps resistant to thermal aging Nox storage materials and traps resistant to thermal aging

B - Operations, Transporting

01

D

B01D 53/94 (2006.01) B01J 23/63 (2006.01) B01J 35/04 (2006.01) B01J 37/02 (2006.01) F01N 3/08 (2006.01)

Patent

CA 2732608

Nitrogen oxide storage catalysts comprising a substrate and at least two coating layers, where the second layer is substantially free of platinum, cerium and barium, and methods of manufacturing and using these nitrogen oxide storage catalysts are disclosed.

L'invention concerne des catalyseurs de stockage d'oxydes d'azote comprenant un substrat et au moins deux couches de revêtement, la seconde couche étant sensiblement exempte de platine, de cérium et de baryum. L'invention porte également sur des procédés de fabrication et d'utilisation de ces catalyseurs de stockage d'oxydes d'azote.

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