US 12,030,038 B2
Exhaust gas purification catalytic device
Kana Iwata, Kakegawa (JP); Minoru Itou, Kakegawa (JP); Shunsuke Ohishi, Kakegawa (JP); Takeru Yoshida, Toyota (JP); Masaru Kakinohana, Toyota (JP); Satoshi Kamitani, Toyota (JP); and Hiromasa Suzuki, Toyota (JP)
Assigned to CATALER CORPORATION, Kakegawa (JP); and TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Appl. No. 17/611,390
Filed by CATALER CORPORATION, Kakegawa (JP); and TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
PCT Filed May 11, 2020, PCT No. PCT/JP2020/018862
§ 371(c)(1), (2) Date Nov. 15, 2021,
PCT Pub. No. WO2020/230763, PCT Pub. Date Nov. 19, 2020.
Claims priority of application No. 2019-092246 (JP), filed on May 15, 2019.
Prior Publication US 2022/0212171 A1, Jul. 7, 2022
Int. Cl. B01J 23/10 (2006.01); B01J 23/40 (2006.01); B01J 23/42 (2006.01); B01J 23/44 (2006.01); B01J 23/46 (2006.01); B01J 35/00 (2024.01); B01J 35/04 (2006.01); B01J 35/56 (2024.01); B01J 37/02 (2006.01); B01J 37/08 (2006.01); F01N 3/10 (2006.01); F01N 3/28 (2006.01)
CPC B01J 23/464 (2013.01) [B01J 23/10 (2013.01); B01J 23/42 (2013.01); B01J 23/44 (2013.01); B01J 35/19 (2024.01); B01J 35/56 (2024.01); B01J 37/0225 (2013.01); B01J 37/08 (2013.01); F01N 3/10 (2013.01); F01N 2570/10 (2013.01)] 7 Claims
OG exemplary drawing
 
1. An exhaust gas purification catalytic device, comprising
a substrate,
one or more catalytic noble metals supported on the substrate, and
a coating layer on a surface of the substrate, wherein
the substrate comprises a plurality of cells partitioned by a porous wall, and
the substrate and the coating layer each contain ceria-zirconia composite oxide particles,
wherein
the plurality of cells in the substrate penetrate from an upstream end to a downstream end of an exhaust gas flow, and
the coating layer is present in a length of 80% or less of a substrate length from a downstream end of an exhaust gas flow of the substrate.