Catalyst consisting of platinum supported on chemically promoted magnesium oxide and cerium dioxide towards H2-SCR

摘要

The invention relates to a novel catalyst having excellent activity and selectivity for reducing nitric oxides (NO/NO 2 ) to nitrogen gas (N 2 ) with hydrogen (H 2 ) being used as a reducing agent under strongly oxidizing conditions (e.g., 2-10 vol % O 2 ) (H 2 -SCR) in the 100-400 °C range, but in particular to the low-temperature range 110-180 °C. The inventive catalyst comprises of platinum and palladium nanoparticles which are in contact with solid phases of a promoted with e.g. vanadium (e.g. V 2 O 5 ) mixed MgO and CeO 2 medium.