Catalyst compositions

To provide a catalyst composition containing a novel perovskite-type composite oxide which permits reversible entrance and exit of noble metals, a catalyst composition is prepared so as to contain a perovskite-type composite oxide represented by the general formula (1): A x A' w...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	MATSUEDA SATOSHI, NAITO KAZUYA, SUZUKI HIROMASA, ISHII YOSHINORI, TAN ISAO, TANAKA HIROHISA, TANIGUCHI MASASHI, UENISHI MARI, KIMURA MAREO, NARITA KEIICHI
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BLASTING CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY 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 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
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	To provide a catalyst composition containing a novel perovskite-type composite oxide which permits reversible entrance and exit of noble metals, a catalyst composition is prepared so as to contain a perovskite-type composite oxide represented by the general formula (1): A x A' w B y B' (1-y-z) N z O 3±Ã (1) (wherein A represents at least one element selected from alkaline earth metals; A' represents at least one element selected from rare earth elements; B represents a tetravalent rare earth element; B' represents at least one element selected from transition elements (excluding tetravalent rare earth elements, Rh, Pd and Pt); N represents at least one element selected from Rh, Pd and Pt; x and w represent an atomic ratio satisfying the following relations: 0.8 x + w 1.3 (0.8 < x 1.3, 0 w 0.4); y represents an atomic ratio satisfying the following relation: 0 < y < 1.0; z represents an atomic ratio satisfying the following relation: 0 < z 0.5; and Ã represents an oxygen e