NIOBIUM OXIDE DOPED MATERIALS AS RHODIUM SUPPORTS FOR THREE-WAY CATALYST APPLICATION

The present disclosure generally provides catalyst compositions, articles and methods for reducing levels of HC, CO and NOx in an exhaust gas stream using the catalyst compositions and catalytic articles. The compositions, which are doped with niobium oxide, significantly improve the performance of...

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Bibliographische Detailangaben
Hauptverfasser:	DEEBA, Michel, LIU, Fudong
Format:	Patent
Sprache:	eng ; fre ; ger
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 SEPARATION STEAM ENGINES THEIR RELEVANT APPARATUS TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	The present disclosure generally provides catalyst compositions, articles and methods for reducing levels of HC, CO and NOx in an exhaust gas stream using the catalyst compositions and catalytic articles. The compositions, which are doped with niobium oxide, significantly improve the performance of a three-way catalyst when used as the rhodium support while strictly controlling the amount of precious metal loading.