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1. WO2022163720 - EXHAUST GAS PURIFICATION CATALYST FILTER FOR GASOLINE ENGINE

Publication Number WO/2022/163720
Publication Date 04.08.2022
International Application No. PCT/JP2022/002943
International Filing Date 26.01.2022
IPC
B01J 35/04 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
35Catalysts, in general, characterised by their form or physical properties
02Solids
04Foraminous structures, sieves, grids, honeycombs
B01D 53/94 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
53Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols
34Chemical or biological purification of waste gases
92of engine exhaust gases
94by catalytic processes
B01J 23/68 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
23Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/113
38of noble metals
54combined with metals, oxides or hydroxides provided for in groups B01J23/02-B01J23/36118
66Silver or gold
68with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
F01N 3/022 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
3Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
02for cooling, or for removing solid constituents of, exhaust
021by means of filters
022characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous
F01N 3/035 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
3Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
02for cooling, or for removing solid constituents of, exhaust
021by means of filters
033in combination with other devices
035with catalytic reactors
F01N 3/10 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
3Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
08for rendering innocuous
10by thermal or catalytic conversion of noxious components of exhaust
CPC
B01D 53/94
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
53Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols,
34Chemical or biological purification of waste gases
92of engine exhaust gases
94by catalytic processes
B01J 23/68
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
23Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
38of noble metals
54combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
66Silver or gold
68with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
B01J 35/04
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
35Catalysts, in general, characterised by their form or physical properties
02Solids
04Foraminous structures, sieves, grids, honeycombs
F01N 3/022
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
3Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
02for cooling, or for removing solid constituents of, exhaust
021by means of filters
022characterised by specially adapted filtering structure, e.g. honeycomb, mesh or fibrous
F01N 3/035
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
3Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
02for cooling, or for removing solid constituents of, exhaust
021by means of filters
033in combination with other devices
035with catalytic reactors ; , e.g. catalysed diesel particulate filters
F01N 3/10
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
3Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
08for rendering innocuous
10by thermal or catalytic conversion of noxious components of exhaust
Applicants
  • 本田技研工業株式会社 HONDA MOTOR CO., LTD. [JP]/[JP]
  • エヌ・イーケムキャット株式会社 N.E. CHEMCAT CORPORATION [JP]/[JP]
Inventors
  • 森 武史 MORI, Takeshi
  • 大塚 真一郎 OTSUKA, Shinichiro
  • 畠山 由章 HATAKEYAMA, Yoshiaki
  • 城取 万陽 SHIROTORI, Mahiro
Agents
  • 稲葉 良幸 INABA, Yoshiyuki
  • 内藤 和彦 NAITO, Kazuhiko
  • 岡野 聡二郎 OKANO, Sojiro
Priority Data
2021-01437201.02.2021JP
Publication Language Japanese (ja)
Filing Language Japanese (JA)
Designated States
Title
(EN) EXHAUST GAS PURIFICATION CATALYST FILTER FOR GASOLINE ENGINE
(FR) FILTRE DE CATALYSEUR DE PURIFICATION DE GAZ D'ÉCHAPPEMENT POUR MOTEUR À ESSENCE
(JA) ガソリンエンジン用排ガス浄化触媒フィルター
Abstract
(EN) The purpose of the present invention is to provide an exhaust gas purification catalyst filter which has enhanced soot collecting performance without increasing pressure loss caused by the formation of a catalyst layer in a partition wall of a wall flow-type substrate. This exhaust gas purification catalyst filter for a gasoline engine purifies exhaust gas from a gasoline engine and comprises: a wall flow-type substrate in which an introduction-side cell having an opened end part on an exhaust gas introduction side, and a discharge-side cell adjacent to the introduction-side cell and having an opened end part on an exhaust gas discharge side are defined by a porous partition wall; and a catalyst layer formed in a pore of the partition wall, wherein the absolute value of the uneven distribution degree of the catalyst layer formed in the pore of the partition wall is at most 4.50, the wash coat amount, excluding the mass of a platinum group, in the catalyst layer formed in the pore of the partition wall is 40-50 g/L, the catalyst layer formed in the pore of the partition wall is a single layer, and the catalyst layer does not contain Ba.
(FR) L'objectif de la présente invention est de fournir un filtre de catalyseur de purification de gaz d'échappement qui a une performance de collecte de suie améliorée sans augmenter la perte de pression provoquée par la formation d'une couche de catalyseur dans une paroi de séparation d'un substrat de type à écoulement sur paroi. Ce filtre de catalyseur de purification de gaz d'échappement pour un moteur à essence purifie les gaz d'échappement d'un moteur à essence et comprend : un substrat de type à écoulement sur paroi dans lequel une cellule côté introduction ayant une partie d'extrémité ouverte sur un côté d'introduction de gaz d'échappement, et une cellule côté évacuation adjacente à la cellule côté introduction et ayant une partie d'extrémité ouverte sur un côté d'évacuation de gaz d'échappement sont définies par une paroi de séparation poreuse ; et une couche de catalyseur formée dans un pore de la paroi de séparation, la valeur absolue du degré de distribution irrégulier de la couche de catalyseur formée dans le pore de la paroi de séparation étant d'au plus 4,50, la quantité de couche de lavage, à l'exclusion de la masse d'un groupe platine, dans la couche de catalyseur formée dans le pore de la paroi de séparation est de 40 à 50 g/L, la couche de catalyseur formée dans le pore de la paroi de séparation est une couche unique, et la couche de catalyseur ne contient pas de Ba.
(JA) ウォールフロー型基材の隔壁内への触媒層形成に伴う圧力損失を増大させずに、ススの捕集性能が高められた排ガス浄化触媒フィルターを提供することを目的とする。ガソリンエンジンの排ガスを浄化する排ガス浄化触媒フィルターであって、排ガス導入側の端部が開口した導入側セルと、該導入側セルに隣接し排ガス排出側の端部が開口した排出側セルとが、多孔質の隔壁により画定されたウォールフロー型基材と、前記隔壁の気孔内に形成された触媒層からなり、前記隔壁の気孔内に形成された前記触媒層の偏在度の絶対値が、4.50以下であり、前記隔壁の気孔内に形成された前記触媒層の白金族質量を除くウォッシュコート量が、40g/L以上50g/L以下であり、前記隔壁の気孔内に形成された前記触媒層は、単層であり、前記触媒層に、Baを含まない、ガソリンエンジン用排ガス浄化触媒フィルター。
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