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公开(公告)号:US20190232258A1
公开(公告)日:2019-08-01
申请号:US16318531
申请日:2017-07-20
发明人: Hirotaka KUNO , Masashi NAKASHIMA , Yuzo HAMADA , Masanori IKEDA
IPC分类号: B01J27/045 , B01D53/94 , B01J33/00 , B01J23/63 , B01J37/02 , B01J37/08 , B01J35/04 , F01N3/10
CPC分类号: B01J27/045 , B01D53/94 , B01D53/9468 , B01D2255/1023 , B01D2255/1025 , B01D2255/9022 , B01J23/63 , B01J27/053 , B01J33/00 , B01J35/04 , B01J37/02 , B01J37/0228 , B01J37/0236 , B01J37/08 , F01N3/10 , F01N3/281 , F01N3/2828 , F01N2330/02 , F01N2330/06 , F01N2370/02 , F01N2510/0682 , F01N2510/0684 , F01N2570/08
摘要: A catalyst for purification of exhaust gas containing a phosphorus compound includes: a lower catalyst layer containing at least one of noble metal provided on a refractory three-dimensional structure; and an upper catalyst layer at an inflow side of exhaust gas and an upper catalyst layer at an outflow side of exhaust gas provided on a surface of the lower catalyst layer. The upper catalyst layer at the inflow side and the upper catalyst layer at the outflow side have different concentrations of noble metal. The catalyst has an intermediate zone with a length of 3 to 23% of the overall length of the refractory three-dimensional structure provided between the upper catalyst layer at the inflow side and the upper catalyst layer at the outflow side. The intermediate zone starts from a position 10 to 38% from an end face of the catalyst at the inflow side of exhaust gas.
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公开(公告)号:US20180280936A1
公开(公告)日:2018-10-04
申请号:US15764234
申请日:2017-03-07
发明人: Eiji KIYONAGA , Kenji HIKINO , Keiichiro MORITA , Toshikazu YOSHIKAWA , Masatake HARUTA , Toru MURAYAMA , Makoto MINO
CPC分类号: F01N3/2842 , B01D53/8628 , B01D53/90 , B01D53/9418 , B01D53/9436 , B01D53/96 , B01D2251/206 , B01D2255/20707 , B01D2255/20723 , B01D2255/9207 , B01D2258/012 , B01D2259/4566 , B01J23/22 , B01J23/92 , B01J35/002 , B01J35/1014 , B01J37/0009 , B01J37/0219 , B01J37/036 , B01J37/08 , B01J37/082 , B01J37/088 , B01J38/02 , B01J38/485 , B01J38/64 , B01J38/66 , F01N3/0205 , F01N3/021 , F01N3/2066 , F01N3/208 , F01N3/28 , F01N3/2803 , F01N5/02 , F01N13/009 , F01N2330/00 , F01N2330/06 , F01N2330/08 , F01N2330/42 , F01N2370/02 , F01N2510/068 , F01N2570/14 , F01N2590/02 , F01N2610/02 , Y02T10/16
摘要: There is provided a catalyst that exhibits a high denitration efficiency at a relatively low temperature and does not cause oxidation of SO2 in a selective catalytic reduction reaction that uses ammonia as a reducing agent. A denitration catalyst molded in a block shape contains 43 wt % or more of vanadium pentoxide. The denitration catalyst has a BET specific surface area of 30 m2/g or more and is used for denitration at 200° C. or lower.
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公开(公告)号:US20180266289A1
公开(公告)日:2018-09-20
申请号:US15762682
申请日:2015-09-24
IPC分类号: F01N3/035 , B01D53/94 , F01N3/022 , B01J29/06 , B01J29/068
CPC分类号: F01N3/035 , B01D53/945 , B01D53/9454 , B01D2255/1023 , B01D2255/1025 , B01D2255/2065 , B01D2255/2066 , B01D2255/2068 , B01D2255/20715 , B01D2255/407 , B01D2255/908 , B01D2255/9155 , B01D2258/014 , B01J29/061 , B01J29/068 , F01N3/0222 , F01N3/101 , F01N2250/02 , F01N2330/06 , F01N2330/30 , F01N2370/02 , F01N2370/04 , F01N2510/06 , Y02T10/22
摘要: Provided is a GPF capable of exhibiting better than conventional three-way purification function. A gasoline particulate filter (GPF) that is provided in an exhaust pipe of an engine and that performs purification by capturing particulate matter (PM) in exhaust gas is provided with a filter substrate in which a plurality of cells extending from an exhaust gas inflow-side end face to an outflow-side end face are defined by porous partition walls and in which openings at the inflow-side end face and openings at the outflow-side end face of the cells are alternately sealed; and a three-way catalyst (TWC) supported by the partition wall. The three-way catalyst is the GPF comprising a catalytic metal containing at least Rh, and a composite oxide having an oxygen storage capacity and containing Nd and Pr in a crystal structure.
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公开(公告)号:US20180264456A1
公开(公告)日:2018-09-20
申请号:US15915593
申请日:2018-03-08
申请人: NGK INSULATORS, LTD.
发明人: Naoya TAKASE
CPC分类号: B01J35/04 , B01D53/94 , F01N3/2026 , F01N3/2803 , F01N3/2828 , F01N2330/06 , F01N2330/30 , F01N2330/34 , F01N2330/48 , Y02T10/26
摘要: A columnar honeycomb structure comprising an outer peripheral side wall having an outer peripheral side surface; a plurality of partition walls that partition and form a plurality of cells penetrating from one bottom surface to another bottom surface to form flow paths, the plurality of partition walls being disposed inside the outer peripheral side wall; and a pair of terminal connection portions arranged so as to be opposed to each other on the outer peripheral side surface of the outer peripheral side wall, wherein the honeycomb structure satisfies a relational expression of 1.3≤L2/L1 in which: in a cross section perpendicular to a direction of the flow paths of the cells, L1 represents a length between two points on the outer peripheral side surface intersecting with a straight line connecting circumferential centers of the pair of terminal connection portions; and L2 represents a length of a shortest path connecting the two points through the outer peripheral side wall and the partition walls.
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公开(公告)号:US20180264446A1
公开(公告)日:2018-09-20
申请号:US15925806
申请日:2018-03-20
发明人: Garry Adam BURGESS , Guy Richard CHANDLER , Keith Anthony FLANAGAN , David MARVELL , Paul Richard PHILLIPS
IPC分类号: B01J29/76 , B01J35/04 , B01J35/00 , B01J23/42 , B01J23/888 , B01J37/02 , B01D53/94 , F01N3/20 , F01N3/022 , F01N3/035 , F01N3/28 , F01N13/00
CPC分类号: B01J29/763 , B01D53/9418 , B01D53/9436 , B01D53/9468 , B01D53/9472 , B01D2255/1021 , B01D2255/20746 , B01D2255/2092 , B01D2255/50 , B01D2255/502 , B01D2255/9022 , B01D2255/9032 , B01D2255/9035 , B01D2255/9155 , B01J23/42 , B01J23/888 , B01J35/0006 , B01J35/04 , B01J37/024 , F01N3/0222 , F01N3/035 , F01N3/2066 , F01N3/28 , F01N13/0093 , F01N2330/06 , F01N2370/04 , F01N2610/02
摘要: A catalytic wall-flow monolith filter for use in an emission treatment system comprises a wall flow monolith comprising a porous substrate having surfaces that define the channels and having a first zone extending in the longitudinal direction from a first end face towards a second end face for a distance less than the filter length and a second zone extending in the longitudinal direction from the second end face towards the first end face and extending in the longitudinal direction for a distance less than the filter length, wherein a first SCR catalyst is distributed throughout the first zone of the porous substrate, an ammonia oxidation catalyst is distributed throughout the second zone of the porous substrate and a second SCR catalyst is located in a layer that covers the surfaces in the second zone of the porous substrate.
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公开(公告)号:US20180250658A1
公开(公告)日:2018-09-06
申请号:US15901207
申请日:2018-02-21
申请人: NGK INSULATORS, LTD
发明人: Shiori NAKAO , Shogo HIROSE
CPC分类号: B01J23/30 , B01D53/9418 , B01D2255/20723 , B01D2255/9202 , B01D2255/9205 , B01D2258/012 , B01J21/063 , B01J35/0026 , B01J35/023 , B01J35/04 , B01J35/1076 , B01J37/0248 , F01N3/2066 , F01N3/2828 , F01N2260/06 , F01N2330/06 , F01N2330/30 , F01N2330/48 , F01N2370/02 , Y02A50/2325
摘要: A honeycomb catalytic body including: a honeycomb structure having porous partition walls, and a catalyst layer including a vanadium catalyst, wherein a cell density of the honeycomb structure is in a range of 8 cells to 48 cells per square centimeter, an amount of the vanadium catalyst to be loaded is in a range of 150 g/L to 400 g/L, and a catalyst charging ratio represented by Equation (1) mentioned below in a cut face of the honeycomb catalytic body is from 50% to 100%. the catalyst charging ratio (%)=(the sectional area of the catalyst layer loaded onto the partition wall inner portions)/(the sectional area of the pores before the catalyst is loaded)×100. Equation (1):
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公开(公告)号:US20180236138A1
公开(公告)日:2018-08-23
申请号:US15752587
申请日:2016-08-15
发明人: Lei Ye
CPC分类号: A61L27/56 , A61L27/025 , A61L27/04 , A61L27/047 , A61L27/18 , A61L27/20 , A61L2430/02 , B01D39/2027 , B01D2239/10 , B22F3/11 , B22F3/1121 , B22F2301/20 , B22F2998/10 , B22F2999/00 , C01B32/956 , C01P2006/16 , C04B35/565 , C22C1/045 , C22C1/08 , F01N2330/06 , F01N2330/22 , B22F2207/17 , B22F1/0059 , B22F9/04 , B22F3/02 , B22F3/10
摘要: A porous material and preparation method thereof is provided. The material includes a material body. The body consists of pore cavities classified according to pore size of material and cavity walls surrounding to form the pore cavities. The lower-level pore cavities are arranged on the cavity walls of the upper-level pore cavities framed by surrounding a three-dimensional space. All the pore cavities are interconnected. The preparation method is: mixing raw powders with pore-forming agent for the smallest-level pore cavities of porous material to formulate slurry; uniformly filling the slurry into polymer material support to form green body and get dried and smashed to obtain mixed grains; uniformly mixing the mixed grains with pore-forming agent for upper-level pore cavities greater than the smallest-level pore cavities of porous material to make compact green body; performing vacuum sintering; performing the conventional follow-up treatment according to the raw materials process of porous material.
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公开(公告)号:US20180207571A1
公开(公告)日:2018-07-26
申请号:US15854149
申请日:2017-12-26
申请人: NGK INSULATORS, LTD.
发明人: Takahiro KONDO , Yasushi KATO
IPC分类号: B01D46/24 , C04B35/478 , C04B35/565 , F01N3/022
CPC分类号: B01D46/2455 , B01D46/2448 , B01D46/2466 , B01D46/2474 , B01D2046/2477 , B01D2046/2481 , B01D2046/2492 , C04B35/478 , C04B35/565 , C04B35/632 , C04B35/638 , C04B37/005 , C04B2235/428 , C04B2235/606 , C04B2237/365 , C04B2237/708 , C04B2237/78 , F01N3/0222 , F01N3/2828 , F01N2330/06 , Y02T10/20
摘要: A honeycomb structure including prismatic columnar honeycomb segments and a bonding layer, wherein the bonding layer has rows in each of which bonding layer portions each disposed between two honeycomb segments arranged to face each other are arranged to extend from one point of a peripheral edge of a bonded body of the honeycomb segments to the other point thereof, in a cross section, the bonding layer of each of the-rows is disposed so that among the bonding layer portions arranged in one direction, an outermost circumference bonding layer portion and at least one of the other bonding layer portions are not superimposed on each other on an extension line of the one direction, and a ratio of shift of side surfaces of adjacent honeycomb segments to a length of one side of a side surface of honeycomb segments having the same cross-sectional shape is 10% or less.
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公开(公告)号:US20180185788A1
公开(公告)日:2018-07-05
申请号:US15736511
申请日:2016-06-15
申请人: BASF SE
发明人: Gerd GRUBERT , Torsten NEUBAUER , Alfred PUNKE
IPC分类号: B01D53/94 , B01J23/42 , B01J23/44 , B01J23/46 , B01J35/02 , B01J35/04 , B01J37/00 , B01J37/02 , B01J37/04 , B01J37/08 , F01N3/023 , F01N3/20 , F01N3/28
CPC分类号: B01D53/9422 , B01D53/9418 , B01D53/9472 , B01D2255/1021 , B01D2255/1023 , B01D2255/1025 , B01D2255/2042 , B01D2255/2047 , B01D2255/2065 , B01D2255/20761 , B01D2255/50 , B01D2255/908 , B01D2255/9155 , B01D2257/404 , B01J23/002 , B01J23/42 , B01J23/44 , B01J23/464 , B01J23/83 , B01J29/763 , B01J35/023 , B01J35/04 , B01J37/0027 , B01J37/0036 , B01J37/0246 , B01J37/0248 , B01J37/04 , B01J37/082 , B01J2523/00 , F01N3/0231 , F01N3/035 , F01N3/0814 , F01N3/2066 , F01N3/2073 , F01N3/2828 , F01N3/2892 , F01N2330/06 , F01N2370/04 , F01N2570/14 , Y02A50/2344 , Y02T10/24 , B01J2523/22 , B01J2523/25 , B01J2523/31 , B01J2523/3712 , B01J2523/48 , B01J2523/822 , B01J2523/824 , B01J2523/828
摘要: Disclosed herein is a catalyzed soot filter (CSF) containing a porous wall flow substrate, a lean NOx trap (LNT) catalyst, and a catalyst for selective catalytic reduction (SCR). Also disclosed is a method of preparing the catalyzed soot filter, an emissions treatment system containing the catalyzed soot filter, and processes for treating exhaust gas emissions employing the catalyzed soot filter.
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公开(公告)号:US09993772B2
公开(公告)日:2018-06-12
申请号:US15183824
申请日:2016-06-16
发明人: Lee Gilbert , Colin Newman , Andrew Newman , Mikael Larsson
IPC分类号: B01J21/04 , B01J23/40 , B01J23/42 , B01J23/44 , B01J23/72 , B01J23/745 , B01J29/76 , B01J35/04 , B01D53/94 , F01N3/10 , F01N3/20 , F01N3/28 , F01N13/00
CPC分类号: B01D53/9468 , B01D53/9418 , B01D53/9436 , B01D53/944 , B01D53/9472 , B01D2255/9022 , B01D2255/9025 , B01D2255/9032 , B01D2255/9035 , F01N3/106 , F01N3/2066 , F01N13/009 , F01N13/0097 , F01N2330/06 , F01N2510/063 , F01N2510/0682 , F01N2510/0684 , F01N2570/10 , F01N2570/12 , F01N2570/14 , F01N2570/18 , F01N2610/02 , F01N2900/1616 , Y02T10/24
摘要: A catalytic article having a flow-through substrate having an inlet, an outlet, and an axial length; an SCR zone containing a first SCR catalyst; and an oxidation zone containing (a) an ASC zone and a DOC zone or (b) a mixed ASC and DOC zone, where the oxidation zone contains an ammonia oxidation catalyst and a DOC catalyst, the SCR zone is positioned on the substrate from the inlet end and extends less than the axial length of the substrate from the inlet, the DOC zone or the mixed ASC and DOC zone is position on the substrate from the outlet end, and when the DOC zone is present, the ASC zone is located between the SCR zone and the DOC zone. In other catalytic articles, the ASC zone further comprises a DEC catalyst. Methods of using the catalytic articles in an SCR process, where the amount of ammonia slip is reduced, are also described.
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