Catalyst composition and method for use in selective catalytic reduction of nitrogen oxides
AssigneeHaldor Topsoe A/S
InventorsAlexandr Yu Stakheev, Marie Grill, Arkady Kustov
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Abstract
Catalyst composition for selective reduction of nitrogen oxides and soot oxidation comprising a physical mixture of one or more acidic zeolite or zeotype components with one ore more redox active metal compounds and a method for selective reduction of nitrogen oxides and soot oxidation by use of the catalyst composition.
Claims16
Catalyst composition for selective reduction of nitrogen oxides and soot oxidation comprising of one or more acidic zeolite or zeotype components selected from the group consisting of BEA, MFI, FAU, FER, CHA, MOR or mixtures thereof physically admixed with one ore more redox active metal compounds selected from the group consisting of CU/Al2O3, Mn/Al2O3, Ce02-ZrO2, Ce—Mn/Al2O3 and mixtures thereof.
Method for the selective reduction of nitrogen oxides and oxidation of soot contained in an off-gas comprising the step of contacting the off-gas in presence of ammonia with a catalyst composition comprising one or more acidic zeolite or zeotype components selected from the group consisting of BEA, MFI, FAU, FER, CHA, MOR or mixtures thereof physically admixed with one ore more redox active metal compounds selected from the group consisting of CU/AI2O3, Mn/Al2O3, CeO2—ZrO2, Ce—Mn/Al2O3 and mixtures thereof.
Dependencies are inferred from the claim text.