Title:
EXHAUST GAS PURIFYING CATALYST, AND CATALYST BODY USING SAME
Document Type and Number:
WIPO Patent Application WO/2024/042935
Kind Code:
A1
Abstract:
The present invention provides an exhaust gas purifying catalyst which has high purification activity of Rh even when exposed to high temperatures for a long period of time. The exhaust gas purifying catalyst disclosed herein comprises a base material and a catalytic noble metal supported on the base material. The base material comprises La-containing alumina particles and a zirconia coating arranged on the surface of the alumina particles. The catalytic noble metal contains at least Rh. The mass ratio of zirconia in the base material is at least 5 mass%. The average particle diameter of the zirconia coating, as determined by a focused ion beam scanning electron microscope, is less than 100 nm.
Inventors:
TANI TOSHIKI (JP)
OISHI SHUNSUKE (JP)
TOGASHI HIROMI (JP)
SATO MASANAO (JP)
OISHI SHUNSUKE (JP)
TOGASHI HIROMI (JP)
SATO MASANAO (JP)
Application Number:
PCT/JP2023/026601
Publication Date:
February 29, 2024
Filing Date:
July 20, 2023
Export Citation:
Assignee:
CATALER CORP (JP)
International Classes:
B01J23/63; B01D53/94
Domestic Patent References:
| WO2018147408A1 | 2018-08-16 | |||
| WO2021166382A1 | 2021-08-26 | |||
| WO2022004638A1 | 2022-01-06 | |||
| WO2014119749A1 | 2014-08-07 |
Attorney, Agent or Firm:
ABE, Makoto (JP)
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