Title:
排ガス浄化用触媒および排ガス浄化用触媒の製造方法
Document Type and Number:
Japanese Patent JPWO2018047964
Kind Code:
A1
Abstract:
ここで開示される排ガス浄化用触媒は、内燃機関の排気管に配置されており、内燃機関から排出される排ガスに含まれる窒素酸化物を浄化する排ガス浄化用触媒であって、担体としてのアルミナと該アルミナに担持された銀とを少なくとも含んだ銀アルミナ触媒を備えている。そして、上記銀アルミナ触媒は、ピリジンＩＲ法における波数１６１３ｃｍ−１のピーク強度に対する波数１５９５ｃｍ−１のピーク強度の比率が０．３以上であり、かつ、銀アルミナ触媒全体を１００ｗｔ％とした場合の銀の担持量が１．０ｗｔ％〜６．０ｗｔ％である。
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Inventors:
Hori Keigo
Norihiko Aono
Daisuke Oki
Yuya Kono
Norihiko Aono
Daisuke Oki
Yuya Kono
Application Number:
JP2018538498A
Publication Date:
August 15, 2019
Filing Date:
September 11, 2017
Export Citation:
Assignee:
Cataler Co., Ltd.
International Classes:
B01J23/50; B01D53/94; B01J23/66; B01J37/02; B01J37/04; B01J37/08; F01N3/10
Domestic Patent References:
| JP2008002451A | 2008-01-10 | |||
| JPH07289918A | 1995-11-07 | |||
| JP2013059721A | 2013-04-04 | |||
| JP2014113585A | 2014-06-26 | |||
| JP2005199262A | 2005-07-28 | |||
| JPH0975729A | 1997-03-25 | |||
| JP2007075774A | 2007-03-29 |
Foreign References:
| US20140199223A1 | 2014-07-17 |
Other References:
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POPOVYCH, N. O. ET AL., THEORETICAL AND EXPERIMENTAL CHEMISTRY, vol. 52, JPN6021026253, 16 August 2016 (2016-08-16), pages 133 - 151, ISSN: 0004548357
JAGTAP, N. ET AL.: "Support modification to improve the sulphur tolerance of Ag/Al2O3 for SCR of NOx with propene under", APPLIED CATALYSIS B: ENVIRONMENTAL, vol. Vol.90, No.3-4, JPN6017046221, 9 April 2009 (2009-04-09), pages 416 - 425, ISSN: 0004548350
MORE, P. M. ET AL.: "Magnesia doped Ag/Al2O3 - Sulfur tolerant catalyst for low temperature HC-SCR of NOx", APPLIED CATALYSIS B: ENVIRONMENTAL, vol. 144, JPN6017046223, 26 July 2013 (2013-07-26), pages 408 - 415, ISSN: 0004548351
FLURA, A. ET AL.: "High-surface-area zinc aluminate supported silver catalysts for low-temperature SCR of NO with ethan", APPLIED CATALYSIS B: ENVIRONMENTAL, vol. 126, JPN6017046228, 23 July 2012 (2012-07-23), pages 275 - 289, ISSN: 0004548352
NORTIER, P. ET AL.: "Effects of crystallinity and morphology on the surface properties of alumina", APPLIED CATALYSIS, vol. 61, no. 1, JPN6017046225, May 1991 (1991-05-01), pages 141 - 160, XP055487300, ISSN: 0004548353
MORTERRA, C. ET AL.: "A case study: surface chemistry and surface structure of catalytic aluminas, as studied by vibration", CATALYSIS TODAY, vol. Vol.27, No.3-4, JPN6017046231, 26 February 1996 (1996-02-26), pages 497 - 532, XP055487305, ISSN: 0004548354
MORTERRA, C. ET AL.: "Infrared study of some surface properties of boehmite (γ-AlO2H)", J. CHEM. SOC., FARADAY TRANS., vol. 88, no. 3, JPN6017046233, 1992, pages 339 - 348, XP055487308, ISSN: 0004548355
HUGHES, T. R. ET AL.: "Bronsted and Lewis acid site concentrations in fluorided alumina from the infrared spectra of adsorb", JOURNAL OF CATALYSIS, vol. 13, no. 1, JPN6017046235, January 1969 (1969-01-01), pages 58 - 64, XP055487324, ISSN: 0004548356
POPOVYCH, N. O. ET AL., THEORETICAL AND EXPERIMENTAL CHEMISTRY, vol. 52, JPN6021026253, 16 August 2016 (2016-08-16), pages 133 - 151, ISSN: 0004548357
Attorney, Agent or Firm:
Makoto Abe
Koji Amano
Koji Amano