	US 12,214,334 B2
	Supported catalyst particles
Hiroki Nihashi, Kakegawa (JP); Shogo Kawamura, Kakegawa (JP); Tomomasa Aikawa, Kakegawa (JP); Isao Naito, Kakegawa (JP); Shogo Shirakawa, Toyota (JP); Masahide Miura, Toyota (JP); Nobuyuki Takagi, Toyota (JP); and Norimichi Shimano, Toyota (JP)
Assigned to CATALER CORPORATION, Kakegawa (JP); and TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Appl. No. 17/435,007
Filed by CATALER CORPORATION, Kakegawa (JP); and TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
PCT Filed Feb. 12, 2020, PCT No. PCT/JP2020/005392 § 371(c)(1), (2) Date Aug. 30, 2021, PCT Pub. No. WO2020/175142, PCT Pub. Date Sep. 3, 2020.
Claims priority of application No. 2019-035818 (JP), filed on Feb. 28, 2019.
Prior Publication US 2022/0134313 A1, May 5, 2022
Int. Cl. B01J 23/46 (2006.01); B01J 21/04 (2006.01); B01J 21/06 (2006.01); B01J 35/02 (2006.01); B01J 35/40 (2024.01); B01J 37/04 (2006.01); B01J 37/08 (2006.01)

CPC B01J 23/464 (2013.01) [B01J 21/04 (2013.01); B01J 21/066 (2013.01); B01J 35/40 (2024.01); B01J 37/04 (2013.01); B01J 37/08 (2013.01)]

5 Claims

1. A supported catalyst particle, comprising

an oxide carrier particle and noble metal particles supported on the oxide carrier particle,

wherein a noble metal constituting the noble metal particles is rhodium,

the noble metal particles have a mass of 5% by mass or less based on the mass of the oxide carrier particle,

the noble metal particles have an average particle size of 1.0 nm to 2.0 nm with a particle size standard deviation σ of 0.8 nm or less, as measured by observation with a transmission electron microscope, and

a presence ratio of noble metal particles having a particle size of less than 1.0 nm is 5% by mass or less with respect to the total mass of the noble metal particles.