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Blanchard, G. (author), Van den Bleek, C. (author), Calis, H.P. (author), Kruse, N. (author), Noirot, R. (author), Tachon, D. (author), Seijger, G. (author)
The invention concerns catalytic compositions comprising a zeolite and methods for reducing nitrogen oxides (NOx) using said catalytic compositions. The inventive catalytic compositions comprise a ferrierite type zeolite (FER), which has been subjected to an ion-exchange with a rare earth selected among cerium, praseodymium, samarium, terbium,...
patent 2003