Title:
EXHAUST PURIFICATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2016/024535
Kind Code:
A1
Abstract:
This exhaust purification device is provided with a reduction catalyst that reduces nitrogen oxides contained in exhaust. The reduction catalyst is provided with a catalyst layer and an adsorption layer covering the catalyst layer. The catalyst layer contains a catalyst support that supports silver. The adsorption layer contains a solid acid metal oxide that is acidic, and the acidity of the adsorption layer is greater than that of the catalyst layer. The adsorption layer has the characteristic of adsorbing ammonia generated at the catalyst layer, and causing the adsorbed ammonia to contact sulfur oxides contained in the exhaust.
Inventors:
SATO SHINYA (JP)
HIRABAYASHI HIROSHI (JP)
HIRABAYASHI HIROSHI (JP)
Application Number:
PCT/JP2015/072464
Publication Date:
February 18, 2016
Filing Date:
August 07, 2015
Export Citation:
Assignee:
HINO MOTORS LTD (JP)
International Classes:
F01N3/20; B01D53/94; F01N3/08; F01N3/10; F01N3/24; F01N3/28
Foreign References:
| JP2008031970A | 2008-02-14 | |||
| JP2013139718A | 2013-07-18 | |||
| JPH07289896A | 1995-11-07 | |||
| JPH06298676A | 1994-10-25 | |||
| JP2013503284A | 2013-01-31 | |||
| JP2010144565A | 2010-07-01 | |||
| JP2007520327A | 2007-07-26 | |||
| JPH09249414A | 1997-09-22 |
Other References:
See also references of EP 3181846A4
Attorney, Agent or Firm:
ONDA, Makoto et al. (JP)
Makoto Onda (JP)
Makoto Onda (JP)
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