Exhaust gas purification catalyst

An exhaust gas purification catalyst includes: a substrate (11); a first catalyst layer (13) that is arranged on an upper surface of the substrate and contains a first support and platinum supported on the first support, in which the first support contains a composite oxide which is formed of oxygen...

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Bibliographische Detailangaben
1. Verfasser:	RUI IMOTO
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	An exhaust gas purification catalyst includes: a substrate (11); a first catalyst layer (13) that is arranged on an upper surface of the substrate and contains a first support and platinum supported on the first support, in which the first support contains a composite oxide which is formed of oxygen and at least one element selected from the group consisting of aluminum, phosphorus and boron and has an oxygen 1s binding energy in a range of 530 eV to 535 eV; and a second catalyst layer that is arranged on an upper surface of the first catalyst layer and contains a second support and rhodium supported on the second support, in which the second support contains a less-thermally-deteriorative ceria-zirconia composite oxide or a porous alumina.