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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
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Seijger, G.B.F. (author), Van den Bleek, C.M. (author), Calis, H.P.A. (author)The invention is directed to catalyst compositions comprising a zeolite, as well as to processes for the reduction of nitrogen oxides (NOx) employing these catalyst compositions. The catalyst compositions of the invention comprise a zeolite of the ferrierite type (FER), which zeolite is ion exchanged with Ce, in particular Ce-H-FER and are very...patent 2003
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Van der Puil, N. (author), Calis, H.P.A. (author), Oudshoorn, O.L. (author), Jansen, J.C. (author), Van Bekkum, H. (author)The invention relates to the preparation of composite catalysts consisting of a support material and a molecular sieve crystal phase that is present on the surface of the support material. The molecular sieve crystals can, as desired, be provided both on the inside and on the outside of a porous support material. With the method according to the...patent 1998
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Van den Bleek, C.M. (author), Calis, H.P.A. (author), Gerritsen, A.W. (author)The invention comprises a method of manufacturing a catalyst element consisting of parallel rods of catalyst-containing material, which material has been provided around a rod-shaped support through pressing in a die. The invention further relates to structured catalyst packings consisting of elements manufactured according to this method....patent 1996
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Jansen, J.C. (author), Legein, C.H. (author), Calis, H.P.A. (author), Van Bekkum, H. (author), Gerritsen, A.W. (author), Van den Bleek, M. (author)The invention relates to a catalyst system of the structured type, in which a structured support is covered with a layer of molecular sieve crystals and/or modifications thereof. These crystals have substantially the same orientation relative to the support surface. The invention further relates to a reactor in which this catalyst system is...patent 1994