Method of producing a catalysed particulate filter and...

Details Method of producing a catalysed particulate filter and... Method of producing a catalysed particulate filter and...

B - Operations, Transporting

01

J

B01J 21/06 (2006.01) B01J 23/10 (2006.01) F01N 3/035 (2006.01)

Patent

CA 2577599

The invention relates to a method of producing a catalysed particulate filter. The invention is characterised in that, in order to lower the particulate oxidation temperature, the filter is provided with a cerium oxide, a zirconium oxide or a cerium/zirconium mixed oxide which can also comprise at least one rare earth oxide other than cerium. The porosity of said oxide or mixed oxide is such that at least 80 % of the pore volume comprises pores having a diameter of least 20 nm.

L'invention concerne un procédé de fabrication d'un filtre à particules catalysé qui est caractérisé en ce qu'en vue d'abaisser la température d'oxydation des particules, on utilise pour l'incorporer dans le filtre, un oxyde de cérium, un oxyde de zirconium ou un oxyde mixte de cérium et de zirconium qui peut comprendre en outre au moins un oxyde d'une terre rare autre que le cérium. La porosité de cet oxyde ou oxyde mixte est telle qu'au moins 80% du volume poreux sont apportés par des pores de diamètre au moins égal à 20 nm.

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