Ferrierite / iron zeolite-based catalyst for the decomposition of N2O and the catalytic reduction of NOx and N2O

摘要

N2O decomposition catalyst comprising a ferrierite zeolite agglomerated in the initial form of Na, K, exchanged with ammonium and finally exchanged with iron, characterized in that: - the proportion of said iron varies from 0.5 to 1.2% by weight in relation to the weight of zeolite, - the proportion of sodium is less than 0.1% and the proportion of potassium less than 0.7% by weight in relation to the weight of zeolite, - said exchange with iron is carried out with Fe2 + ions.