B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
B01J 37/20 (2006.01) B01D 53/86 (2006.01) B01J 23/22 (2006.01) B01J 23/72 (2006.01) B01J 23/745 (2006.01)
Patent
CA 2664362
The present invention concerns the selective removal of nitrogen oxides (NOx) from gasses. In particular, the invention concerns a process, a catalyst and the use of a catalyst for the selective removal of nitrogen oxides in the presence of ammonia from gases containing a significant amount of alkali metal and/or alkali-earth compounds which process comprises using a catalyst combined of (i) a formed porous superacidic support, said superacidic support having an Hammett acidity stronger than Ho=-12, and (ii) a metal oxide catalytic component deposited on said superacidic support selected from the group consisting of oxides of Fe, Cu, V, Cr, Mn, and any mixtures thereof.
L'invention concerne l'élimination sélective d'oxydes d'azote (NOx) à partir de gaz. Plus particulièrement, cette invention concerne un procédé, un catalyseur et l'utilisation d'un catalyseur dans l'élimination sélective d'oxydes d'azote, présents dans l'ammoniac; des gaz contenant une quantité importante de métaux alcalins et/ou de composés alcalino-terreux, ce procédé consistant à utiliser un catalyseur combiné (i) formé d'un support superacide poreux formé, ce support superacide possédant une acidité de Hammett supérieure à Ho=-12, et (ii) d'un composant catalytique d'oxyde métallique déposé sur ce support superacide sélectionné dans le groupe constitué d'oxydes de Fe, Cu, V, Cr, Mn, et de mélanges de ceux-ci.
Due-Hansen Johannes
Fehrmann Rasmus
Kustov Arkady
Rasmussen Soren Birk
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
Technical University Of Denmark
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