Title:
複合酸化物、その製造法及び排ガス浄化用触媒
Document Type and Number:
Japanese Patent JP5722790
Kind Code:
B2
Abstract:
Disclosed are a silicon-containing cerium composite oxide which is capable of maintaining a large specific surface area even used in a high temperatures environment, and which has excellent heat resistance and reducibility, as well as a method for producing the composite oxide and a catalyst for exhaust gas purification employing the composite oxide . The composite oxide contains 2 to 20 mass% silicon in terms of SiO 2 , has properties of exhibiting a specific surface area of not less than 40 m 2 /g as measured by the BET method after calcination at 1000 °C for 5 hours, and a reducibility of not lower than 30 % as calculated from measurement of temperature-programmed reduction from 50 °C to 900 °C after calcination at 1000 °C for 5 hours, and is suitable for a co-catalyst for a catalyst for exhaust gas purification.
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Inventors:
Naotaka Otake
Kazuhiko Yokota
Kazuhiko Yokota
Application Number:
JP2011543292A
Publication Date:
May 27, 2015
Filing Date:
November 25, 2010
Export Citation:
Assignee:
Anan Kasei Co., Ltd.
International Classes:
B01J23/10; B01D53/86; B01J35/10; B01J37/02; B01J37/03; B01J37/08; C01B33/12; F01N3/10
Domestic Patent References:
| JP2009530091A | 2009-08-27 | |||
| JPH11216676A | 1999-08-10 | |||
| JP2007520364A | 2007-07-26 | |||
| JPH10230162A | 1998-09-02 | |||
| JP2009530091A | 2009-08-27 | |||
| JPH11216676A | 1999-08-10 | |||
| JP2007520364A | 2007-07-26 | |||
| JPH10230162A | 1998-09-02 |
Foreign References:
| WO2008025753A2 | 2008-03-06 | |||
| WO2008025753A2 | 2008-03-06 |
Other References:
JPN6011005839; Ｅｌｉａｎａ ＲＯＣＣＨＩＮＩ ｅｔ ａｌ．: 'Ｒｅｌａｔｉｏｎｓｈｉｐｓ ｂｅｔｗｅｅｎ Ｓｔｒｕｃｔｕｒａｌ／Ｍｏｒｐｈｏｌｏｇｉｃａｌ Ｍｏｄｉｆｉｃａｔｉｏｎｓ ａｎｄ Ｏｘｙｇｅｎ Ｓｔｏｒａｇｅ-Ｒｅｄｏｘ Ｂｅｈａｖｉｏｒ ｏｆ Ｓｉ' Ｊｏｕｒｎａｌ ｏｆ Ｃａｔａｌｙｓｉｓ Ｖｏｌ．１９４， Ｉｓｓｕｅ ２, 2000, ｐ．４６１-４７８．, Ｅｌｓｅｖｉｅｒ
Attorney, Agent or Firm:
Hajime Sakai
Masahiro Kurai
Masahiro Kurai