Electrically heated exhaust gas purification catalyst
AssigneeMitsui Kinzoku Company, Limited
InventorsToshiki Asakoshi, Hironori Iwakura
Life of this patent
Estimating the term…
Abstract
An object of the present invention is to provide an electrically heated exhaust gas purification catalyst that is less likely to cause the deterioration of the exhaust gas purification performance, and, in order to achieve this object, the present invention provides an electrically heated exhaust gas purification catalyst (1) including: a substrate (10); at least one pair of electrodes (20a, 20b) provided on the substrate (10); an undercoat layer (30) provided on the substrate (10), the undercoat layer (30) containing an aluminum oxide as a main component; and a catalyst layer (40) provided on the undercoat layer (30), the catalyst layer (40) containing a noble metal element, wherein the undercoat layer (30) contains a Group 2 element.
Claims12
An electrically heated exhaust gas purification catalyst comprising:
- a substrate;
- at least one pair of electrodes provided on the substrate;
- an undercoat layer provided on the substrate, the undercoat layer containing an aluminum element as a main component;
- and
- a catalyst layer provided on the undercoat layer, the catalyst layer containing a noble metal element,
- wherein the undercoat layer contains a Group 2 element, and
- wherein a total amount of the aluminum element and the Group 2 element contained in the undercoat layer is 95 mol % or more and 100 mol % or less based on a total molar amount of all metal elements contained in the undercoat layer.
Dependencies are inferred from the claim text.