Title:
EXHAUST GAS PURIFICATION CATALYST
Document Type and Number:
WIPO Patent Application WO/2023/047933
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide an exhaust gas purification catalyst that comprises a wall-flow substrate and a catalyst part, and that can improve PM collection performance and suppress an increase in pressure loss. Provided is an exhaust gas purification catalyst (1), comprising: a substrate (10) that extends in an exhaust gas circulation direction (E); and at least one among a first catalyst part (20) and a second catalyst part (30) provided to the substrate (10), wherein the first catalyst part (20) satisfies following formulas (11) and (12): (11) 0.20≤R11≤0.80, (12) 0.30≤R12≤0.85, and the second catalyst part (30) satisfies following formulas (21) and (22): (21) 0.20≤R21≤0.80, (22) 0.30≤R22≤0.85.
Inventors:
AKITA SHINGO (JP)
KURIHARA HIROKI (JP)
KURIHARA HIROKI (JP)
Application Number:
PCT/JP2022/033325
Publication Date:
March 30, 2023
Filing Date:
September 05, 2022
Export Citation:
Assignee:
MITSUI MINING & SMELTING CO LTD (JP)
International Classes:
B01J35/04; B01D53/94; B01J23/63; F01N3/022; F01N3/035; F01N3/28
Domestic Patent References:
| WO2021125256A1 | 2021-06-24 | |||
| WO2021181487A1 | 2021-09-16 | |||
| WO2020262623A1 | 2020-12-30 | |||
| WO2020255687A1 | 2020-12-24 |
Foreign References:
| JP2016150305A | 2016-08-22 | |||
| JP2018537265A | 2018-12-20 |
Attorney, Agent or Firm:
MIYAJIMA Manabu et al. (JP)
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