CATALYST FOR EXHAUST GAS PURIFICATION

A honeycomb catalyst for exhaust gas purification comprising a honeycomb body, the honeycomb body comprising: a fraction acting as a pollutant trap and/or having a catalytically active fraction based on a catalytically active system comprising a base metal; and a catalytically inactive fraction, whe...

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Bibliographische Detailangaben
Hauptverfasser:	DOTZEL, Ralf, MUENCH, Joerg Werner, LEPPELT, Rainer, BISKUPSKI, Diana, PIRAS, Irene, SMEDLER, Gudmund, BAUER, Juergen, SCHU, Johannes, JODLAUK, Joerg Walter
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ARTIFICIAL STONE CEMENTS CERAMICS CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE LIME, MAGNESIA METALLURGY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL REFRACTORIES SEPARATION SLAG THEIR RELEVANT APPARATUS TRANSPORTING TREATMENT OF NATURAL STONE
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Beschreibung
Zusammenfassung:	A honeycomb catalyst for exhaust gas purification comprising a honeycomb body, the honeycomb body comprising: a fraction acting as a pollutant trap and/or having a catalytically active fraction based on a catalytically active system comprising a base metal; and a catalytically inactive fraction, wherein the catalytically inactive fraction comprises at least one thermally stable sulphate or sulphide component for reducing thermally induced shrinkage of the honeycomb body. La présente invention concerne un catalyseur en nid d'abeilles pour la purification de gaz d'échappement comprenant un corps en nid d'abeilles, le corps en nid d'abeilles comprenant : une fraction agissant en tant que piège à polluant et/ou ayant une fraction catalytiquement active basée sur un système catalytiquement actif comprenant un métal de base ; et une fraction catalytiquement inactive, la fraction catalytiquement inactive comprenant au moins un composant de sulfate ou sulfure thermiquement stable pour réduire le retrait thermiquement induit du corps en nid d'abeilles.