Title:
CATALYZER FOR PURIFYING EXHAUST GAS OF GASOLINE ENGINE, AND EXHAUST GAS PURIFICATION SYSTEM USING SAME
Document Type and Number:
WIPO Patent Application WO/2023/136060
Kind Code:
A1
Abstract:
Provided is a catalyzer that is for purifying exhaust gas of a gasoline engine and that has high NH3 purification performance after endurance. The catalyzer for purifying exhaust gas of a gasoline engine disclosed herein is formed so as to be disposed in an exhaust path of a gasoline engine. The catalyzer for purifying exhaust gas is provided with a base material, an NH3 adsorption layer containing proton-type zeolite, and a catalyst layer containing a noble metal catalyst. The NH3 adsorption layer is laminated to the catalyst layer so as to be located closer to the base material side as compared to the catalyst layer. The basic backbone of the proton-type zeolite practically consists of four-membered rings, six-membered rings, and eight-membered rings.
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Inventors:
OGAWA RYOICHI (JP)
OHASHI TATSUYA (JP)
ONOHARA YU (JP)
OHASHI TATSUYA (JP)
ONOHARA YU (JP)
Application Number:
PCT/JP2022/046960
Publication Date:
July 20, 2023
Filing Date:
December 20, 2022
Export Citation:
Assignee:
CATALER CORP (JP)
International Classes:
B01J29/74; B01D53/94; B01J35/04; F01N3/08; F01N3/10; F01N3/22; F01N3/28
Foreign References:
| JP2020510518A | 2020-04-09 | |||
| JP2020510519A | 2020-04-09 | |||
| JP2020182898A | 2020-11-12 | |||
| JP2021520995A | 2021-08-26 |
Attorney, Agent or Firm:
ABE, Makoto (JP)
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