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Title:
EXHAUST GAS PURIFICATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/188620
Kind Code:
A1
Abstract:
A substrate (11) comprises an inflow cell (21), an outflow cell (22), and a porous and gas-permeable barrier wall (23) separating the inflow cell (21) and the outflow cell (22), and comprises a first catalyst unit (14) provided on the upstream side in the exhaust gas flow direction on the surface of the barrier wall (23) that faces the inflow cell (21), and a second catalyst unit (15) provided on the downstream side of the barrier wall surface that faces the outflow cell. For the volume of pores with a pore diameter of 10-18 μm, defining the first pore volume as the measured value for the first catalyst unit (14) and the barrier wall (23) in the area where the first catalyst unit (14) is provided, and the second pore volume as the measured value for the second catalyst unit (15) and the barrier wall (23) in the area where the second catalyst unit (15) is provided, the first pore volume is greater than the second pore volume, and the catalytically active component contained in the first catalyst unit (14) and the catalytically active component contained in the second catalyst unit (15) are of different types.

Inventors:
KURIHARA, Hiroki (1013-1, Ageoshimo, Ageo-sh, Saitama 25, 〒3620025, JP)
SAKURADA, Yu (1013-1, Ageoshimo, Ageo-sh, Saitama 25, 〒3620025, JP)
NAGAI, Yusuke (1013-1, Ageoshimo, Ageo-sh, Saitama 25, 〒3620025, JP)
ENDO, Yoshinori (1013-1, Ageoshimo, Ageo-sh, Saitama 25, 〒3620025, JP)
NABEMOTO, Takeshi (1013-1, Ageoshimo, Ageo-sh, Saitama 25, 〒3620025, JP)
AKITA, Shingo (1013-1, Ageoshimo, Ageo-sh, Saitama 25, 〒3620025, JP)
Application Number:
JP2019/011601
Publication Date:
October 03, 2019
Filing Date:
March 19, 2019
Export Citation:
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Assignee:
MITSUI MINING & SMELTING CO., LTD. (1-11-1 Osaki, Shinagawa-ku Tokyo, 84, 〒1418584, JP)
International Classes:
B01J35/04; B01D53/94; B01J23/46; F01N3/035; F01N3/28
Domestic Patent References:
WO2017175574A12017-10-12
Foreign References:
JP2016078016A2016-05-16
JP2008151100A2008-07-03
JP2016185516A2016-10-27
Attorney, Agent or Firm:
SHOWA INTERNATIONAL PATENT FIRM (NIKKEN AKASAKA BLDG, 7F. 5-7, Akasaka 2-chome, Minato-K, Tokyo 52, 〒1070052, JP)
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