Process for treating exhaust gas from internal combustion engine over catalyst comprising nickel, rhodium, and monolithic ceramic support

The process comprises passing the exhaust gas through a reduction zone containing a catalyst comprising a nickel component, a rhodium component, and a monolithic ceramic support and being maintained at a temperature of about 700 DEG to about 1,800 DEG F. The catalyst may also contain a platinum comp...

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Bibliographische Detailangaben
Hauptverfasser:	RAKOWSKY, FREDERICK W, MEGUERIAN, GARBIS H, HIRSCHBERG, EUGENE H
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COMPOUNDS THEREOF INORGANIC CHEMISTRY METALLURGY NON-METALLIC ELEMENTS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	The process comprises passing the exhaust gas through a reduction zone containing a catalyst comprising a nickel component, a rhodium component, and a monolithic ceramic support and being maintained at a temperature of about 700 DEG to about 1,800 DEG F. The catalyst may also contain a platinum component and/or a palladium component and the monolithic ceramic support may be coated with a wash coat of a ceramic material having a relatively high surface area. The nickel component and the rhodium component are deposited upon the monolithic ceramic support sequentially and in that order.