B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
B01J 35/00 (2006.01) B01D 53/94 (2006.01) B01J 20/02 (2006.01) B01J 20/04 (2006.01) B01J 20/06 (2006.01) B01J 23/34 (2006.01) B01J 37/02 (2006.01) C01G 25/00 (2006.01) B01J 23/02 (2006.01) B01J 23/10 (2006.01)
Patent
CA 2373080
The invention concerns a compound and its use as NO¿x? trap in the treatment of exhaust gases. Said compound is characterised in that it comprises a combination of: a first composition comprising a support and an active phase, the active phase being based on manganese and at least another element A selected among the alkalines and alkaline earths, the manganese and the element A being chemically bound, a second composition comprising a support and an active phase based on manganese and at least another element B selected among the alkalines, the alkaline-earths and rare earths, said second composition having or capable of having a specific surface area of at least 10 m?2¿/g after being calcined for 8 hours at 800 ·C.
L'invention concerne un composé et son utilisation comme piège à NOx dans le traitement des gaz d'échappement. Ce composé est caractérisé en ce qu'il comprend une association: d'une première composition comprenant un support et une phase active, la phase active étant à base de manganèse et d'au moins un autre élément A choisi parmi les alcalins et les alcalino-terreux, le manganèse et l'élément A étant chimiquement liés; d'une seconde composition comprenant un support et une phase active à base de manganèse et d'au moins un autre élément B choisi parmi les alcalins, les alcalino-terreux et les terres rares, cette seconde composition présentant ou étant susceptible de présenter une surface spécifique d'au moins 10m?2¿/g après calcination 8 heures à 800 ·C.
Bert Christian
Birchem Thierry
Bouly Christophe
Guyon Marc
Hedouin Catherine
Ecia
Renault
Rhodia Chimie
Robic
LandOfFree
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