SAMMENSÆTNING PÅ BASIS AF ET CERIUMOXID, ET ZIRCONIUMOXID OG EVENTUELT ET OXID AF EN ANDEN SJÆLDEN JORDART, MED EN HØJ SPECIFIK OVERFLADE VED 1100° C, FREMGANGSMÅDE TIL FREMSTILLING HERAF OG ANVENDELSE HERAF SOM KATALYSATOR

Composition comprising cerium oxide and zirconium oxide in a cerium/zirconium atomic ratio of at least 1 has a surface area of at least 9 m 2>/g after calcination at 1100[deg]C for 4 hours, or contains another rare earth metal oxide and has a surface area of at least 19 m 2>/g after calcinatio...

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Bibliographische Detailangaben
Hauptverfasser:	LARCHER, Olivier, ROHART, Emmanuel
Format:	Patent
Sprache:	dan
Schlagworte:	CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F INORGANIC CHEMISTRY METALLURGY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	Composition comprising cerium oxide and zirconium oxide in a cerium/zirconium atomic ratio of at least 1 has a surface area of at least 9 m 2>/g after calcination at 1100[deg]C for 4 hours, or contains another rare earth metal oxide and has a surface area of at least 19 m 2>/g after calcination at 1100[deg]C for 4 hours. Independent claims are also included for: (1) a process for producing the composition; (2) a catalyst system comprising the composition; (3) internal combustion engine exhaust gas treatment using the composition as a catalyst.