A method for removing nitrogen oxides by using dual catalyst beds

摘要

The present invention relates to a purification method of a nitrogen oxide using a double catalyst layer , more particularly NOx reduction catalyst Pt / V _X -P _Y - ( hydroxyl hold material ) _{use the Z} and reduction of nitrogen oxides to nitrogen and nitrous oxide , wherein the decomposition of nitrous oxide produced nitrous oxide catalyst Rh-Ag / CeO ₂ / M1-M2-M3 relates to a method of decomposition into nitrogen and oxygen to re- use , a nitrogen oxide reducing catalyst on the the conversion of nitrogen oxide is 95% or more in the temperature range 100-300 , because the conversion rate is 100% conversion of the nitrogen in the nitrous oxide catalytic decomposition of nitrous oxide on the nitrogen oxide by using a double catalyst layer of the present invention to at least 95% nitrogen can be .