MOLECULAR SIEVE CATALYST COMPOSITIONS, CATALYST COMPOSITES, SYSTEMS, AND METHODS

Described is a selective catalytic reduction material comprising a spherical particle including an agglomeration of crystals of a molecular sieve. The catalyst is a crystalline material that is effective to catalyze the selective catalytic reduction of nitrogen oxides in the presence of a reductant...

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Bibliographische Detailangaben
Hauptverfasser:	BREEN, MICHAEL, YANG, XIAOFAN, MUELLER, ULRICH, MOHANAN, JAYA, L, FU, QI, SLAWSKI, BARBARA, MOINI, AHMAD, TRUKHAN, NATALIA, HOCHMUTH, JOHN, K, KRAUS, MARTIN, W
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	BLASTING CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY ENGINE PLANTS IN GENERAL GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL HEATING LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL STEAM ENGINES THEIR RELEVANT APPARATUS TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	Described is a selective catalytic reduction material comprising a spherical particle including an agglomeration of crystals of a molecular sieve. The catalyst is a crystalline material that is effective to catalyze the selective catalytic reduction of nitrogen oxides in the presence of a reductant at temperatures between 200 °C and 600 °C. A method for selectively reducing nitrogen oxides and an exhaust gas treatment system are also described. L'invention concerne un matériau de réduction catalytique sélective comprenant une particule sphérique comprenant une agglomération de cristaux d'un tamis moléculaire. Le catalyseur est un matériau cristallin qui est efficace pour catalyser la réduction catalytique sélective d'oxydes d'azote en présence d'un réducteur à des températures comprises entre 200 °C et 600 °C. L'invention concerne également un procédé pour réduire sélectivement des oxydes d'azote et un système de traitement de gaz d'échappement.