Patent ID: 9095816
Filing Date: 2015-08-04
Classification: B01D,B01J,F01N,Y02T

Abstract:
1. A catalyst for removing nitrogen oxides from the exhaust gas of diesel engines, consisting of a support body of length L and a catalytically active coating composed of one or more material zones comprising: a) a catalytically active mixed oxide consisting of cerium oxide, zirconium oxide, rare earth sesquioxide and niobium oxide; and b) at least one compound selected from the group consisting of barium oxide, barium hydroxide, barium carbonate, strontium oxide, strontium hydroxide, strontium carbonate, praseodymium oxide, lanthanum oxide, magnesium oxide, mixed magnesium/aluminum oxide, alkali metal oxide, alkali metal hydroxide, alkali metal carbonate and mixtures thereof, and wherein the catalytically active mixed oxide, based on the total amount thereof, has the following composition: CeO Nb RE ZrO