Catalyst for purifying nitrogen oxides and method for...

Details Catalyst for purifying nitrogen oxides and method for... Catalyst for purifying nitrogen oxides and method for...

B - Operations, Transporting

01

J

B01J 27/055 (2006.01) B01D 53/94 (2006.01)

Patent

CA 2732014

Provided is a silver-supported alumina catalyst for reducing nitrogen oxides using ethanol, which has the drawbacks of the conventional silver-supported alumina catalysts improved, has high performance, is not likely to deteriorate over time, and has excellent initial performance and durability. A catalyst for purifying nitrogen oxides, which purifies nitrogen oxides in exhaust gas using an alcohol as a reducing agent, and contains alumina, aluminum sulfate and silver as main components.

La présente invention concerne un catalyseur à haut rendement destiné au nettoyage d'oxydes d'azote. Ce catalyseur, qui présente un excellent rendement initial ainsi qu'une excellente durée de vie, n'est pas susceptible de se détériorer sur la durée. En outre, ce catalyseur ne présente pas les inconvénients des catalyseurs conventionnels d'alumine à charge d'argent avec lesquels les oxydes d'azote sont réduits au moyen d'éthanol. Les principaux composants de ce catalyseur, qui nettoie les oxydes d'azote dans les gaz d'échappement au moyen d'alcool servant d'agent réducteur, sont l'alumine, le sulfate d'aluminium et l'argent.

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