Patent ID: 8603941
Filing Date: 2013-12-10
Classification: B01D,B01J,Y02A,Y02T

Abstract:
1. A method for the removal of NO2 emission from a lean burn compression ignition diesel engine and regenerating a diesel particulate filter, the method comprising the steps of: providing a diesel particulate filter; providing a catalyst supported on or inside the walls of the diesel particulate filter, the catalyst being active in the reduction of NO2 to NO and consisting of palladium oxide and CeO2 stabilized with ZrO2; bringing NO2 containing diesel engine exhaust gas in contact with the catalyst in the diesel particulate filter and reducing the NO2 contained in the diesel exhaust gas to NO by reaction with soot present in the diesel exhaust gas; and catalyzing the oxidization of soot by reduction of NO2 to NO and reducing the amount of soot in the diesel particulate filter, thereby regenerating the diesel particulate filter.