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Title:
DELAFOSSITE-TYPE OXIDE FOR EXHAUST GAS PURIFICATION CATALYST, AND EXHAUST GAS PURIFICATION CATALYST USING SAME
Document Type and Number:
WIPO Patent Application WO/2018/123863
Kind Code:
A1
Abstract:
In relation to a Cu-based delafossite-type oxide that is effective as an exhaust gas catalyst, Cu is placed in a high catalytic activity low-valence state, whereby a novel Cu-based delafossite-type oxide is provided having higher activity than in the past. Proposed is a delafossite-type oxide for an exhaust gas purification catalyst, the delafossite-type oxide being represented by general formula ABO2, and being characterized by including: Cu and Ag in the A site of the general formula; and two or more elements selected from the group consisting of Mn, Al, Cr, Ga, Fe, Co, Ni, In, La, Nd, Sm, Eu, Y, V, and Ti in the B site of the general formula, Ag being included in a proportion of at least 0.001 and less than 20 at.% in the A site of the general formula.

Inventors:
KATO SUMIO (JP)
OGASAWARA MASATAKA (JP)
MORIYA TOSHIHARU (JP)
IWASHINA KATSUYA (JP)
IWAKURA HIRONORI (JP)
Application Number:
PCT/JP2017/046120
Publication Date:
July 05, 2018
Filing Date:
December 22, 2017
Export Citation:
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Assignee:
UNIV AKITA (JP)
MITSUI MINING & SMELTING CO (JP)
International Classes:
B01J23/89; B01D53/94; C01G37/00; C01G45/00; F01N3/10
Domestic Patent References:
WO2014103597A12014-07-03
Foreign References:
JP2008156130A2008-07-10
JP2002255548A2002-09-11
Other References:
OKUDA, T. ET AL.: "Dimensional Crossover of Low-Energy Magnetic Excitation for Delafossite Oxide Cu1-x AgxCrO2 with a Spin-3/2 Antiferromagnetic Triangular Sublattice", JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, vol. 78, 13 January 2009 (2009-01-13), pages 013604
Attorney, Agent or Firm:
TAKEUCHI, ICHIZAWA & ASSOCIATES (JP)
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