CONTINUOUSLY OPERATING CATALYST FOR OXIDIZING AND PURIFYING EXHAUST GAS FROM DIESEL ENGINE WITHOUT DISCHARGING PARTICULATE AND INTERRUPTING GAS PURIFICATION PERIODICALLY

PURPOSE: To form a catalyst for purifying diesel-engine exhaust gas by providing a layer of a vanadium compound on a carrier such as aluminum oxide in a fine particle and further supporting platinum group metals as active components on the layer. CONSTITUTION: This catalyst for purifying diesel-engi...

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Hauptverfasser:	BERUNTO ENGURAA, HERUBERUTO FUERUKAA, EDOGAA KOOBERUSHIYUTAIN, RAINAA DOMESURE
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY COMBUSTION ENGINES COMBUSTION ENGINES IN GENERAL 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 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:	PURPOSE: To form a catalyst for purifying diesel-engine exhaust gas by providing a layer of a vanadium compound on a carrier such as aluminum oxide in a fine particle and further supporting platinum group metals as active components on the layer. CONSTITUTION: This catalyst for purifying diesel-engine exhaust gas is formed by providing a layer composed of a vanadium compound being an actively promoting material on a carrier which is comprised of fine particulate alumina, titanium oxide, silica, zeolite or a mixture thereof and then, supporting a platinum group metal consisting of platinum, palladium, rhodium and iridium being catalyst active components on the layer composed of the vanadium compound. The catalyst has the ability to convert hydrocarbons and carbon monoxide contained in the exhaust gas with a high conversion ratio at a low temp. and shows reduced oxidative action against NO and SO2 .