Fine honeycomb ceramic catalyst for nitrogen oxide(s) redn. in waste gas - contg. e.g. one or more of titanium di:oxide, tungsten oxide, molybdenum oxide and vanadium oxide

A shaped ceramic catalyst consists of a catalytically active ceramic material in the form of a honeycomb with 50-1200 (pref. 100-600) cells/sq.in. and a wall thickness of 0.1-0.6 (pref. 0.1-0.3) mm. Pref. the catalytically active material is one or more of TiO2, WO2, MoO3 and V2O5. The ceramic mater...

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Bibliographische Detailangaben
Hauptverfasser:	SCHMELZ, HELMUT. DR., 8210 PRIEN, DE, KUSCHKE, RENATE, 8152 FELDKIRCHEN, DE, SCHWAEN, WERNER, 8000 MUENCHEN, DE
Format:	Patent
Sprache:	eng ; ger
Schlagworte:	ARTIFICIAL STONE BLASTING CEMENTS CERAMICS CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COMBUSTION ENGINES COMBUSTION ENGINES IN GENERAL COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE 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 HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS INTERNAL-COMBUSTION PISTON ENGINES LIGHTING LIME, MAGNESIA MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING METALLURGY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL REFRACTORIES SEPARATION SLAG STEAM ENGINES THEIR RELEVANT APPARATUS TRANSPORTING TREATMENT OF NATURAL STONE WEAPONS
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Beschreibung
Zusammenfassung:	A shaped ceramic catalyst consists of a catalytically active ceramic material in the form of a honeycomb with 50-1200 (pref. 100-600) cells/sq.in. and a wall thickness of 0.1-0.6 (pref. 0.1-0.3) mm. Pref. the catalytically active material is one or more of TiO2, WO2, MoO3 and V2O5. The ceramic material has a pore radius of 10-50 nm. and a specific surface of 20-150 sq.m./g. and contains 0.1-10 wt.% fireclay. USE/ADVANTAGE - The catalyst is used esp. in exhaust gas pipes of diesel engines, gas turbines and the like. It has high catalytic activity, can be extruded to fine honeycombs and contains a film-forming aid which promotes uniform drying to prevent crack formation.