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1. JP2021037453 - 排ガス浄化用触媒

官庁
日本
出願番号 2019159780
出願日 02.09.2019
公開番号 2021037453
公開日 11.03.2021
公報種別 A
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 23/63
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
56Platinum group metals
63with rare earths or actinides
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
B01J 37/02
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
37Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
02Impregnation, coating or precipitation
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
出願人 CATALER CORP
株式会社キャタラー
発明者 OOTA TAKAYA
太田 貴也
OISHI SHUNSUKE
大石 隼輔
TAKASU RYOSUKE
高須 亮佑
代理人 安部 誠
天野 浩治
発明の名称
(EN) EXHAUST GAS PURIFICATION CATALYST
(JA) 排ガス浄化用触媒
要約
(EN)

PROBLEM TO BE SOLVED: To provide an exhaust gas purification catalyst with improved durability.

SOLUTION: The present invention provides an exhaust gas purification catalyst comprising a substrate 11 and a catalyst layer 20 provided on the substrate 11. The catalyst layer 20 includes a catalytic metal and a support material 21 supporting the catalytic metal. The support material 21 includes an OSC material 22 having oxygen storage capacity, and a carrier 23 other than the OSC material. The average particle size Dx of the OSC material 22 is at least 1.5 μm and is greater than the average particle size Dy of the carrier 23 other than the OSC material.

SELECTED DRAWING: Figure 3

COPYRIGHT: (C)2021,JPO&INPIT

(JA)

【課題】耐久性が向上した排ガス浄化用触媒を提供すること。
【解決手段】本発明によって、基材11と、基材11の上に設けられている触媒層20と、を備える排ガス浄化用触媒が提供される。触媒層20は、触媒金属と、上記触媒金属を担持している担持材料21と、を含む。担持材料21は、酸素吸蔵能を有するOSC材22と、OSC材以外の担体23と、を含む。OSC材22の平均粒子径Dxは、1.5μm以上であり、かつ、上記OSC材以外の担体23の平均粒子径Dyよりも大きい。
【選択図】図3

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