Title:
排ガス浄化用触媒
Document Type and Number:
Japanese Patent JP5459927
Kind Code:
B2
Abstract:
An exhaust gas-purifying catalyst is less prone to cause a decrease in its activity even when used in a high temperature atmosphere containing oxygen at a high concentration. The exhaust gas-purifying catalyst includes a composite oxide and Pd or a second solid solution of a composite and Rh and/or Pt. The first and second solid solutions have perovskite structure and are represented by ABO 3 and CDO 3 , respectively. The composite oxide catalyst is supported by a composite oxide support including a composite oxide of spinel structure represented by EF 2 O 4 or a composite oxide represented by GAl 12 O 19 . A and B represent a rare-earth element and a transition element, respectively. C and G represent an alkaline-earth element. D represents one or more of Ti, Zr, Hf and Ce. E represents an alkaline-earth element and/or a transition element. F represents one or more of Al, Mg and transition elements.
Inventors:
Satoshi Matsueda
Kimura Norio
Akira Masai
Keiichi Narita
Hirohisa Tanaka
Tanko
Mari Nishinishi
Taniguchi Shoji
Kimura Norio
Akira Masai
Keiichi Narita
Hirohisa Tanaka
Tanko
Mari Nishinishi
Taniguchi Shoji
Application Number:
JP2006188257A
Publication Date:
April 02, 2014
Filing Date:
July 07, 2006
Export Citation:
Assignee:
Cataler Co., Ltd.
Daihatsu Motor Co., Ltd.
Daihatsu Motor Co., Ltd.
International Classes:
B01J23/89; B01D53/94; B01J23/58; B01J32/00
Domestic Patent References:
| JP2004243305A | ||||
| JP2006131457A | ||||
| JP2002079094A | ||||
| JP2006021091A | ||||
| JP2000189799A | ||||
| JP2008023482A | ||||
| JP3377676B2 |
Foreign References:
| WO2005058490A1 |
Other References:
NAITO Kazuya et al.,Development of a Rh-Intelligent Catalyst,SAE Technical Paper Series(Society of Automotive Engineers),2006年 4月,page.19-26
TANAKA Hirohisa et al.,LaFePdO3 perovskite automotive catalyst having a self-regenerative function,Journal of Alloys and Compounds,2006年 2月,page.1071-1077
TANAKA Hirohisa et al.,LaFePdO3 perovskite automotive catalyst having a self-regenerative function,Journal of Alloys and Compounds,2006年 2月,page.1071-1077
Attorney, Agent or Firm:
Makoto Nakamura
Kurata Masatoshi
Takashi Mine
Yoshihiro Fukuhara
Sadao Muramatsu
Ryo Hashimoto
Kurata Masatoshi
Takashi Mine
Yoshihiro Fukuhara
Sadao Muramatsu
Ryo Hashimoto