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1. CN111432928 - PHOSPHORUS-COMPOUND-CONTAINING-EXHAUST-GAS PURIFYING CATALYST

Office
China
Application Number 201880077307.8
Application Date 26.12.2018
Publication Number 111432928
Publication Date 17.07.2020
Publication Kind A
IPC
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
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 or 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 B01J21/113
38of noble metals
54combined with metals, oxides or hydroxides provided for in groups B01J23/02-B01J23/36118
56Platinum group metals
63with rare earths or actinides
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
F01N 3/28
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 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
B01D 53/9468
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
9459Removing one or more of nitrogen oxides, carbon monoxide, or hydrocarbons by multiple successive catalytic functions; systems with more than one different function, e.g. zone coated catalysts
9463with catalysts positioned on one brick
9468in different layers
B01D 53/9472
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
9459Removing one or more of nitrogen oxides, carbon monoxide, or hydrocarbons by multiple successive catalytic functions; systems with more than one different function, e.g. zone coated catalysts
9463with catalysts positioned on one brick
9472in different zones
B01D 2255/1023
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2255Catalysts
10Noble metals or compounds thereof
102Platinum group metals
1023Palladium
B01D 2255/1025
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2255Catalysts
10Noble metals or compounds thereof
102Platinum group metals
1025Rhodium
B01D 2255/2042
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2255Catalysts
20Metals or compounds thereof
204Alkaline earth metals
2042Barium
Applicants UMICORE SHOKUBAI JAPAN CO., LTD.
优美科触媒日本有限公司
Inventors KUNO HIROTAKA
久野弘尊
NAKASHIMA MASASHI
中岛优
NAKAMA KIMIHIRO
中间公博
Agents 中国国际贸易促进委员会专利商标事务所 11038
Priority Data 2017-254113 28.12.2017 JP
Title
(EN) PHOSPHORUS-COMPOUND-CONTAINING-EXHAUST-GAS PURIFYING CATALYST
(ZH) 含有磷化合物的废气净化用催化剂
Abstract
(EN) The present invention provides a phosphorus-compound-containing-exhaust-gas purifying catalyst that has: a fire-resistant three-dimensional structure that is provided so as to extend from a gas-inflow-side end face to a gas-outflow-side end face and that has a partition wall for separately forming a plurality of gas flow channels penetrating from the gas-inflow-side end face to the gas-outflow-side end face; a lower catalyst layer that is formed on the partition wall continuously from the gas-inflow-side end face and that contains Pd; a gas-inflow-side upper catalyst layer that is located on the outermost surface of the partition wall, that is formed continuously from the gas-inflow-side end face, and that contains Rh; and a gas-outflow-side upper catalyst layer that is located on the outermost surface of the partition wall, that is formed continuously from the gas-outflow-side end face, and that contains Rh. The gas-inflow-side upper catalyst layer and the gas-outflow-side upper catalyst layer are disposed so as to be away from each other along the direction of the gas flow channels. The length of the lower catalyst layer along the direction of the gas flow channels is 15 mm or longer. The percentage of the length thereof with respect to the total length of each of the gas flow channels is 18% or greater and less than 100%.
(ZH) 本发明涉及含有磷化合物的废气净化用催化剂,其具有:耐火性三维结构体(其沿着从气体流入侧端面至气体流出侧端面延伸地设置,并且具有划分形成从气体流入侧端面到气体流出侧端面贯通的多个气体流路的分隔壁),在分隔壁上从气体流入侧端面连续地形成的含Pd的下催化剂层,位于分隔壁上的最外表面、从气体流入侧端面连续地形成的含Rh的气体流入侧上催化剂层,以及,位于分隔壁上的最外表面、从气体流出侧端面连续地形成的含Rh的气体流出侧上催化剂层;其中,气体流入侧上催化剂层和气体流出侧上催化剂层以沿着气体流路方向相互间隔的方式配置,沿着气体流路方向的下催化剂层的长度为15mm以上,相对于气体流路的总长,该长度的比例为18%以上且小于100%。