Title:
HONEYCOMB TYPE METAL CARRIER AND CATALYTIC CONVERTER
Document Type and Number:
WIPO Patent Application WO/2023/042479
Kind Code:
A1
Abstract:
[Problem] To achieve both an improvement in purification performance of a catalytic converter and suppression of catalyst deterioration. [Solution] Provided is a honeycomb type metal carrier in which flat metal foils and wavy metal foils are alternately laminated, wherein: a plurality of holes are formed in the flat metal foils and the wavy metal foils; burrs having small heights are formed at the edge of each hole; at least the surfaces of the burrs of the flat metal foils and the wavy metal foils are covered with oxide films containing α-alumina; and 0.2 mm ≤ D ≤ 4.0 mm, 5% ≤ R ≤ 70%, and 0.1 μm ≤ L ≤ 30 μm are satisfied, where D is an average pore diameter of the plurality of holes, R is an aperture ratio, and L is an average height of the burrs.
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Inventors:
INAGUMA TORU (JP)
KONYA SHOGO (JP)
MURAMATSU KEI (JP)
GOTO YASUHIDE (JP)
NOZAWA SOUHEI (JP)
KONYA SHOGO (JP)
MURAMATSU KEI (JP)
GOTO YASUHIDE (JP)
NOZAWA SOUHEI (JP)
Application Number:
PCT/JP2022/020024
Publication Date:
March 23, 2023
Filing Date:
May 12, 2022
Export Citation:
Assignee:
NIPPON STEEL CHEMICAL & MAT CO LTD (JP)
International Classes:
B01J23/63; B01D53/94; B01J35/04; B01J37/02; F01N3/28
Domestic Patent References:
| WO2018159556A1 | 2018-09-07 |
Foreign References:
| JP2009178647A | 2009-08-13 | |||
| JP2005334757A | 2005-12-08 | |||
| JPH11257048A | 1999-09-21 | |||
| JP2006142138A | 2006-06-08 | |||
| JP4975969B2 | 2012-07-11 | |||
| JP5199291B2 | 2013-05-15 | |||
| JP2005313083A | 2005-11-10 | |||
| JP2007203256A | 2007-08-16 |
Attorney, Agent or Firm:
MIZUNO Katsufumi et al. (JP)
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