公开(公告)号：US20230311109A1

公开(公告)日：2023-10-05

申请号：US18162759

申请日：2023-02-01

申请人： NGK Insulators, Ltd.

发明人： Yasuhiro SHIGA ,  Shuji MURAMATSU ,  Koji MOTOKI

IPC分类号： B01J35/04 ,  B01J21/12 ,  B01J35/10 ,  B01J35/00 ,  B01D53/94 ,  F01N3/28

CPC分类号： B01J35/04 ,  B01J21/12 ,  B01J35/1076 ,  B01J35/0026 ,  B01D53/94 ,  F01N3/2828 ,  B01D2255/9155 ,  F01N2330/32 ,  F01N2370/02

摘要： A pillar-shaped honeycomb structure including an outer peripheral side wall, and a plurality of partition walls disposed on an inner peripheral side of the outer peripheral side wall, the plurality of partition walls partitioning a plurality of cells forming flow paths from a first end surface to a second end surface, wherein



an average pore diameter of the partition walls measured by a mercury porosimeter is 10 μm or less, and
when a cross section of the plurality of partition walls is observed with an X-ray microscope and porosities (%) of each partition wall is measured in a thickness direction from one surface to the other surface of each partition wall, an average porosity of each partition wall is 40 to 70%, and a difference between a maximum value and a minimum value of the porosity of each partition wall is 11% or less.

公开(公告)号：US20230302438A1

公开(公告)日：2023-09-28

申请号：US18010525

申请日：2021-06-04

申请人： Cataler Corporation

发明人： Ryota Onoe ,  Takahiro Noguchi ,  Tatsuya Ohashi ,  Kohei Takasaki

IPC分类号： B01J35/00 ,  B01J23/46 ,  B01J23/44 ,  B01J23/58 ,  B01J23/10 ,  B01J21/04 ,  B01J35/10 ,  F01N3/28 ,  B01D53/94

CPC分类号： B01J35/0006 ,  B01J23/464 ,  B01J23/44 ,  B01J23/58 ,  B01J23/10 ,  B01J21/04 ,  B01J35/1014 ,  F01N3/2828 ,  B01D53/9468 ,  F01N2370/02 ,  F01N2330/06 ,  B01D2255/908 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/407 ,  B01D2255/9207 ,  B01D2255/2042 ,  B01D2255/9022 ,  B01D2258/01

摘要： According to a technique disclosed herein, provided is an exhaust gas purification catalyst, which both suppresses OSC when using a new vehicle and maintains OSC during life cycles. The exhaust gas purification catalyst disclosed herein is an exhaust gas purification catalyst includes a substrate, and a catalyst coated layer formed on the surface of the substrate, wherein the catalyst coated layer contains an OSC material having an oxygen storage capacity. The catalyst coated layer includes a Rh layer mainly containing Rh as a catalyst metal, and a Pd/Pt layer mainly containing Pd and/or Pt as a catalyst metal. At least a portion of the Pd/Pt layer in the catalyst coated layer contains, as the OSC material, a low specific surface area OSC material, including a ceria-zirconia composite oxide and having a specific surface area of 40 m2/g or more and 60 m2/g or less.

公开(公告)号：US20230294082A1

公开(公告)日：2023-09-21

申请号：US18162786

申请日：2023-02-01

申请人： NGK Insulators, Ltd.

发明人： Kazuya HOSODA ,  Kyohei ATSUJI ,  Kisuke YAMAMOTO ,  Takahiro TOMITA

IPC分类号： B01J27/224 ,  B01J21/12 ,  B01J35/04 ,  B01J35/10 ,  B01J35/00 ,  B01J37/00 ,  B01J37/08 ,  B01D53/94 ,  F01N3/20 ,  F01N3/28

CPC分类号： B01J27/224 ,  B01J21/12 ,  B01J35/04 ,  B01J35/1076 ,  B01J35/0033 ,  B01J37/0009 ,  B01J37/08 ,  B01D53/94 ,  F01N3/2026 ,  F01N3/2828 ,  B01D2255/9155 ,  F01N2370/04

摘要： A composite sintered body contains a silicon phase, a cordierite phase, and a high-resistance silicon carbide phase. The content of silicon in the composite sintered body to the composite sintered body is not lower than 30 mass % and not higher than 50 mass %. The content of cordierite in the composite sintered body to the composite sintered body is not lower than 10 mass % and not higher than 50 mass %. The content of high-resistance silicon carbide in the composite sintered body to the composite sintered body is not lower than 20 mass % and not higher than 50 mass %.

公开(公告)号：US11731912B2

公开(公告)日：2023-08-22

申请号：US17444197

申请日：2021-08-02

申请人： NGK INSULATORS, LTD.

发明人： Yunie Izumi ,  Kennichi Hidaka ,  Akihiro Miura

IPC分类号： C04B38/00 ,  C04B35/195 ,  F01N3/28

CPC分类号： C04B38/0009 ,  C04B35/195 ,  C04B2235/3229 ,  C04B2235/3244 ,  C04B2235/3481 ,  F01N3/2828 ,  F01N2330/30

摘要： A porous ceramic structure includes a porous honeycomb structure composed primarily of cordierite, and Ce- and Zr-containing particles fixedly attached to the honeycomb structure. The Ce- and Zr-containing particles contain Ce and Zr. The Ce- and Zr-containing particles have a fixedly attached portion located inside the honeycomb structure and a protrusion contiguous with the fixedly attached portion and protruding from the honeycomb structure.

公开(公告)号：US20230147850A1

公开(公告)日：2023-05-11

申请号：US17907563

申请日：2021-04-15

申请人： BASF CORPORATION ,  BASF SE

发明人： Vjunov ALEKSEI ,  Sun YIPENG

IPC分类号： B01J23/46 ,  B01J23/10 ,  B01J23/02 ,  B01J35/00 ,  B01J35/04 ,  B01D53/94 ,  F01N3/28

CPC分类号： B01J23/464 ,  B01D53/945 ,  B01D53/9472 ,  B01J23/02 ,  B01J23/10 ,  B01J35/04 ,  B01J35/0006 ,  F01N3/2803 ,  F01N3/2828 ,  B01D2255/908 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/9022 ,  B01D2255/9032 ,  F01N3/101 ,  F01N2370/02

摘要： The presently invention provides an emission control catalyst article comprising a substrate, a bottom washcoat layer comprising a platinum group metal coated on the 60 to 100% length of the substrate, and a top washcoat layer comprising a platinum group metal coated on the 60 to 100% length of the substrate such that the top coat covers at least 60% of the length of the bottom washcoat layer, wherein at least a portion of the top washcoat layer, the bottom washcoat layer or both washcoat layers comprises a platinum group metal deposited within the said washcoat layer(s) with a platinum group metal gradient such that the PGM concentration in a top-most portion of the said washcoat layer is at least two time higher compared to the PGM concentration in a bottom-most portion of the said washcoat layer.

公开(公告)号：US20230141207A1

公开(公告)日：2023-05-11

申请号：US17907554

申请日：2021-03-31

申请人： BASF CORPORATION

发明人： Edgar Viktor HUENNEKES ,  Petra CORDES ,  Jan Martin BECKER ,  Kevin BEARD ,  Nicholas MCGUIRE ,  Jaya L LAKSHMI ,  John K HOCHMUTH ,  Joseph A PATCHETT ,  Kenneth E VOSS

IPC分类号： B01J29/76 ,  B01J29/80 ,  B01J21/08 ,  B01J35/00 ,  B01J35/04 ,  B01J37/02 ,  B01J37/08 ,  B01J37/04 ,  B01D53/94 ,  F01N3/20 ,  F01N3/28 ,  F01N3/035

CPC分类号： B01J29/7615 ,  B01D53/9418 ,  B01D53/9472 ,  B01J21/08 ,  B01J29/80 ,  B01J35/04 ,  B01J35/0006 ,  B01J37/04 ,  B01J37/088 ,  B01J37/0228 ,  B01J37/0236 ,  B01J37/0246 ,  F01N3/035 ,  F01N3/2066 ,  F01N3/2828 ,  B01J2029/062

摘要： The present invention relates to a catalyst for the selective catalytic reduction of nitrogen oxide, the catalyst comprising a first coating comprising a 12-membered ring pore zeolitic material comprising a first metal which is one or more of copper and iron, and a second coating comprising an 8-membered ring pore zeolitic material comprising a second metal which is one or more of copper and iron.

公开(公告)号：US20190232258A1

公开(公告)日：2019-08-01

申请号：US16318531

申请日：2017-07-20

申请人： UMICORE SHOKUBAI JAPAN CO., LTD.

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.

公开(公告)号：US20190093530A1

公开(公告)日：2019-03-28

申请号：US15995163

申请日：2018-06-01

申请人： CATALER CORPORATION ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

发明人： Takahiro NOGUCHI ,  Makoto TSUJI ,  Hiroto IMAI ,  Yusuke SHIMMYO ,  Hiroyuki MATSUBARA

IPC分类号： F01N3/10 ,  F01N3/20 ,  F01N3/28 ,  B01J37/02 ,  B01J23/63 ,  B01J21/04 ,  B01J21/06 ,  B01J21/08

CPC分类号： F01N3/101 ,  B01J21/04 ,  B01J21/066 ,  B01J21/08 ,  B01J23/63 ,  B01J37/0244 ,  B01J37/0248 ,  F01N3/103 ,  F01N3/2066 ,  F01N3/2803 ,  F01N3/2828 ,  F01N2510/06 ,  F01N2510/0682 ,  F01N2510/0684

摘要： An oxidation catalyst device for exhaust gas purification, having a first catalyst coating layer on the exhaust gas flow's upstream side, second catalyst coating layer of an upper layer on exhaust gas flow's downstream side, and third catalyst coating layer of a lower layer on exhaust gas flow's downstream side, on a substrate, wherein the weight ratio of platinum to palladium in the first catalyst coating layer is 0.75 to 4.50, weight ratio of platinum to palladium in second catalyst coating layer is greater than 4.50 to 25.0, weight ratio of platinum to palladium in third catalyst coating layer is 0.12 or less, the length of first catalyst coating layer is 8% to 55% of the substrate's length, length of second catalyst coating layer is 45% to 95% of the substrate's length, and length of third catalyst coating layer is 45% to 95% of the substrate's length.

公开(公告)号：US20180280958A1

公开(公告)日：2018-10-04

申请号：US15921927

申请日：2018-03-15

申请人： NGK INSULATORS, LTD.

发明人： Takayuki Ogata

IPC分类号： B01J35/04 ,  C04B38/00 ,  B01D46/24 ,  F01N3/28

CPC分类号： B01J35/04 ,  B01D46/2429 ,  B01D46/247 ,  B01D46/2474 ,  B01D2046/2433 ,  B01D2046/2481 ,  B01D2046/2492 ,  B01D2046/2496 ,  C04B38/0009 ,  F01N3/2828 ,  F01N2330/34 ,  F01N2330/38 ,  C04B35/185 ,  C04B35/195 ,  C04B35/478 ,  C04B35/565

摘要： A honeycomb structure includes a pillar-shaped honeycomb structure body having porous partition walls, wherein the partition walls have projecting portions, the projecting portions include specific projecting portions in which side surfaces have a divergent shape inclined at an inclination angle of 40 to 70°, a relation of 0.04≤H/A≤0.40 is satisfied, a relation of 0.04≤H1/A≤0.38 is satisfied, the height H of the specific projecting portion and the height H1 of the hem satisfy a relation of H1

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

IPC分类号： B01J35/04 ,  F01N3/28

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.