US 12,296,320 B2
Exhaust gas cleaning catalyst structure and production method therefor
Toshiaki Kimura, Tokyo (JP); Koji Ueno, Tokyo (JP); Takeshi Endo, Tokyo (JP); Akiko Iwasa, Tokyo (JP); Shumpei Suzuki, Tokyo (JP); Toshiharu Moriya, Saitama (JP); Ohki Houshito, Saitama (JP); and Yunosuke Nakahara, Saitama (JP)
Assigned to HONDA MOTOR CO., LTD., Tokyo (JP); and Mitsui Mining & Smelting Co., Ltd., Tokyo (JP)
Appl. No. 17/611,372
Filed by HONDA MOTOR CO., LTD., Tokyo (JP); and Mitsui Mining & Smelting Co., Ltd., Tokyo (JP)
PCT Filed May 13, 2020, PCT No. PCT/JP2020/019041
§ 371(c)(1), (2) Date Nov. 15, 2021,
PCT Pub. No. WO2020/241250, PCT Pub. Date Dec. 3, 2020.
Claims priority of application No. 2019-097452 (JP), filed on May 24, 2019.
Prior Publication US 2022/0212173 A1, Jul. 7, 2022
Int. Cl. B01J 21/04 (2006.01); B01J 23/10 (2006.01); B01J 23/42 (2006.01); B01J 23/44 (2006.01); B01J 23/46 (2006.01); B01J 23/63 (2006.01); B01J 35/56 (2024.01); B01J 37/02 (2006.01); F01N 3/10 (2006.01)
CPC B01J 23/63 (2013.01) [B01J 35/56 (2024.01); B01J 37/0225 (2013.01); F01N 3/101 (2013.01); F01N 2570/10 (2013.01); F01N 2570/12 (2013.01); F01N 2570/14 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An exhaust gas purifying catalyst structure comprising:
a metal support comprising a mantle and a metal foil provided inside the mantle and forming an exhaust gas flow path; and
a catalyst layer provided on a surface forming the flow path of the metal foil, wherein
the catalyst layer comprises a noble metal, an OSC material comprising cerium and a rare-earth element other than cerium (non-Ce rare-earth element), and alumina, and a content of the non-Ce rare-earth element with respect to 100% by mass of the catalyst layer is 2.52% by mass or more and 4.62% by mass or less in terms of an oxide,
the metal foil is made of stainless steel comprising aluminum, and
a content of aluminum in the metal foil is 3.0% by mass or more and 6.0% by mass or less.