Title:
排ガス浄化用触媒
Document Type and Number:
Japanese Patent JP7184743
Kind Code:
B2
Abstract:
The present disclosure provides an exhaust gas purification catalyst having an improved low-temperature activity, which comprises a substrate and a catalyst coat layer formed on the substrate, wherein the catalyst coat layer contains Rh fine particles and a promoter comprising a Ce—Zr-based composite oxide and a Zr-based composite oxide not containing cerium oxide, wherein the Rh fine particles have an average particle size measured by a transmission electron microscope observation of 1.0 nm or more to 2.0 nm or less, and a standard deviation σ of the particle size of 0.8 nm or less, and wherein the Rh fine particles are supported on each of the Ce—Zr-based composite oxide and the Zr-based composite oxide not containing cerium oxide.
Inventors:
Chinzei Yuuo
Seiji Nakato
Shogo Shirakawa
Hiromasa Suzuki
Masahide Miura
Takahiro Nishio
Norimichi Shimano
Hiroki Futahashi
Hiromi Togashi
Mitsuru Okada
Takashi Onozuka
Kusata Akiyama
Naito Isao
Seiji Nakato
Shogo Shirakawa
Hiromasa Suzuki
Masahide Miura
Takahiro Nishio
Norimichi Shimano
Hiroki Futahashi
Hiromi Togashi
Mitsuru Okada
Takashi Onozuka
Kusata Akiyama
Naito Isao
Application Number:
JP2019235839A
Publication Date:
December 06, 2022
Filing Date:
December 26, 2019
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
Cataler Co., Ltd.
Cataler Co., Ltd.
International Classes:
B01J23/63; B01D53/94; F01N3/10
Domestic Patent References:
| JP2014083492A | ||||
| JP2015182040A | ||||
| JP2019150793A |
Foreign References:
| WO2020175142A1 |
Other References:
Catalysis Today,2016年07月16日,vol.281,p.490-499
Attorney, Agent or Firm:
Patent Attorney Corporation Hiraki International Patent Office