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1. WO2014156676 - CATALYST STRUCTURE FOR EXHAUST GAS TREATMENT

Publication Number WO/2014/156676
Publication Date 02.10.2014
International Application No. PCT/JP2014/056637
International Filing Date 13.03.2014
IPC
B01J 23/58 2006.01
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
56Platinum group metals
58with alkali- or alkaline earth metals or beryllium
B01D 53/94 2006.01
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 35/10 2006.01
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
10characterised by their surface properties or porosity
F01N 3/28 2006.01
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
24characterised by constructional aspects of converting apparatus
28Construction of catalytic reactors
CPC
B01D 2255/9022
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2255Catalysts
90Physical characteristics of catalysts
902Multilayered catalyst
9022Two layers
B01D 2255/908
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2255Catalysts
90Physical characteristics of catalysts
908O2-storage component incorporated in the catalyst
B01D 2255/9202
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2255Catalysts
90Physical characteristics of catalysts
92Dimensions
9202Linear dimensions
B01D 53/945
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
9445Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC]
945characterised by a specific catalyst
B01J 23/002
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
002Mixed oxides other than spinels, e.g. perovskite
B01J 23/10
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
10of rare earths
Applicants
  • 三井金属鉱業株式会社 MITSUI MINING & SMELTING CO.,LTD. [JP]/[JP]
Inventors
  • 今田 安紀 IMADA, Yasunori
  • 中原 祐之輔 NAKAHARA, Yunosuke
Agents
  • 特許業務法人竹内・市澤国際特許事務所 TAKEUCHI, ICHIZAWA & ASSOCIATES
Priority Data
2013-07248629.03.2013JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) CATALYST STRUCTURE FOR EXHAUST GAS TREATMENT
(FR) STRUCTURE DE CATALYSEUR POUR LE TRAITEMENT DE GAZ D'ÉCHAPPEMENT
(JA) 排気ガス処理用触媒構造体
Abstract
(EN)
Provided is a novel catalyst structure for exhaust gas treatment, which is provided with an upper catalyst layer and a lower catalyst layer, and which is capable of sufficiently performing a function as a three-way catalyst, while maintaining gas diffusibility. Proposed is a catalyst structure which is provided with a base, an upper catalyst layer and a lower catalyst layer, and which is characterized in that the first peak or the second peak are respectively present within the pore volume size range of 10-50 nm and the pore volume size range of 50-100 nm in the logarithmic differential pore volume distribution as determined by a mercury intrusion porosimeter.
(FR)
L'invention concerne une nouvelle structure de catalyseur pour le traitement de gaz d'échappement, qui est dotée d'une couche de catalyseur supérieure et d'une couche de catalyseur inférieure, et qui est apte à effectuer de façon suffisante une fonction comme catalyseur à trois voies, tout en maintenant une diffusibilité des gaz. L'invention concerne une structure de catalyseur qui est doté d'une base, d'une couche de catalyseur supérieure et d'une couche de catalyseur inférieure, et qui est caractérisée en ce que le premier pic ou le second pic sont respectivement présents dans la plage de dimension de volume de pore de 10-50 nm et la plage de dimension de volume de pore de 50-100 nm dans la distribution de volume de pore différentielle logarithmique telle que déterminée par un porosimètre à intrusion de mercure.
(JA)
 上側触媒層と下側触媒層とを備えた排気ガス処理用触媒構造体において、ガス拡散性を維持して、3元触媒としての機能を十分に発揮することができる、新たな排気ガス処理用触媒構造体を提供する。 基材と上側触媒層と下側触媒層とを備えた触媒構造体であって、水銀圧入ポロシメータにより測定される対数微分空隙容積分布において、空隙容積径10nm~50nm及び50nm~100nmのそれぞれに、第1ピーク若しくは第2ピークを有することを特徴とする触媒構造体を提案する。
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