Exhaust gas purification catalyst

Details Exhaust gas purification catalyst Exhaust gas purification catalyst

B - Operations, Transporting

01

J

B01J 23/00 (2006.01) B01D 53/94 (2006.01) B01J 23/63 (2006.01) B01J 23/83 (2006.01) B01J 23/89 (2006.01) B01J 35/04 (2006.01) B01J 37/02 (2006.01)

Patent

CA 2729558

An exhaust gas purification catalyst includes a lower catalyst layer that contains a ceria-zirconia mixed oxide having 50 to 70 mass% of CeO2 and 5 mass% or more of Pr2O3 and carries at least one of Pt and Pd, and an upper catalyst layer that contains at least zirconia and carries at least Rh, wherein the total amount of CeO2 per liter of the carrier base is 15 to 30 g. Because the amount of CeO2 is small, formation of H2S is suppressed and a high capability of adsorbing and releasing oxygen is brought out in spite of the small amount of CeO2.

Linvention concerne un catalyseur de purification dun gaz déchappement, qui comprend : une couche catalytique inférieure qui contient un oxyde mixte oxyde de cérium-zircone contenant 50 à 70 % en masse de CeO2 et 5 % en masse ou plus de Pr2O3 et porte Pt et/ou Pd; et une couche catalytique supérieure qui contient au moins de la zircone et porte au moins Rh. Selon linvention, la quantité totale de CeO2 par litre de la base de support est de 15 à 30 g. Puisque la quantité de CeO2 est petite, la formation dH2S est supprimée et une grande capacité dadsorption et de libération de loxygène est obtenue malgré la petite quantité de CeO2.

Affiliated with

Also associated with

Rating

Exhaust gas purification catalyst does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Exhaust gas purification catalyst, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Exhaust gas purification catalyst will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1489846