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    IRON-PROMOTED ZEOLITE AND CATALYST MADE THEREFROM
    96.
    发明申请
    IRON-PROMOTED ZEOLITE AND CATALYST MADE THEREFROM 有权

    公开(公告)号：US20220280924A1

    公开(公告)日：2022-09-08

    申请号：US17637094

    申请日：2020-08-12

    申请人： BASF CORPORATION

    发明人： Jeff H. Yang ,  Stanley A. Roth ,  Robin M. Huff

    IPC分类号： B01J29/76 ,  B01J35/04 ,  B01J37/30 ,  B01J37/10 ,  B01J37/02 ,  F01N3/28 ,  F01N13/00 ,  F01N3/20 ,  F01N3/10 ,  B01D53/94

    摘要： The present disclosure provides a method of forming a selective catalytic reduction (SCR) catalyst, the method including receiving a first iron-promoted zeolite having a first iron content, and treating the iron-promoted zeolite with additional iron in an ion exchange step to form a second iron-promoted zeolite with a second iron content, the second iron content being higher than the first iron content. A selective catalytic reduction (SCR) catalyst composition including an ironpromoted zeolite having at least about 6 weight percent iron, based on total weight of the ironpromoted zeolite, wherein the iron content of the zeolite was added to the zeolite in at least two separate steps is also provided herein.

    Lean-burn engine after-treatment system
    97.
    发明授权
    Lean-burn engine after-treatment system 有权

    公开(公告)号：US11434799B2

    公开(公告)日：2022-09-06

    申请号：US16797755

    申请日：2020-02-21

    申请人： HYUNDAI MOTOR COMPANY ,  KIA MOTORS CORPORATION

    发明人： Ki-Ho Park

    IPC分类号： F01N3/10 ,  F01N3/20 ,  F01N13/08 ,  F01N3/28

    摘要： A lean-burn engine after-treatment system includes: a multiple catalyst bed including an APC catalyst housing, an SCR catalyst housing that surrounds the APC catalyst housing, and a CUC housing that surrounds the SCR catalyst housing; a first housing surrounding the multiple catalyst bed; a double pipe including a first pipe that is connected to a front end of the APC catalyst housing and a rear end of a TWC housing, and a second pipe that surrounds the first pipe and is connected to the first housing; and an exhaust-gas treatment unit connected to a rear end of the CUC housing. At least one perforation is formed in each of inner and outer surfaces of the first pipe, the APC catalyst housing, and the SCR catalyst housing, and an inner surface of the CUC housing.

    PLUGGED HONEYCOMB STRUCTURE
    98.
    发明申请
    PLUGGED HONEYCOMB STRUCTURE 有权

    公开(公告)号：US20220258148A1

    公开(公告)日：2022-08-18

    申请号：US17453356

    申请日：2021-11-03

    申请人： NGK Insulators, Ltd.

    发明人： Makoto TERANISHI ,  Tadato ITO ,  Ken ITADU ,  Kana SAKAMOTO

    IPC分类号： B01J35/04 ,  B01D46/24 ,  B01D53/94 ,  F01N3/28 ,  F01N3/10 ,  F01N3/20

    摘要： A plugged honeycomb structure includes a honeycomb structure body having a porous partition wall disposed to surround a plurality of cells; and a plugging portion disposed at one end of the cells, wherein, in a section orthogonal to the extending direction of the cell, the cells each have a shape that is polygon, and one of the inflow cells and another are adjacent to each other with the partition wall therebetween, and in the section orthogonal to the extending direction of the cell, a total area of the inflow cell is larger than a total area of the outflow cell, a porosity of the partition wall is 38% or more, a thickness of the partition wall is 125 μm or more and 280 μm or less, a cell density of the honeycomb structure body is 31.0 cells/cm2 or more, and an air-permeability resistance of the partition wall is 4.5×107Pa·s/m2 or less.

    Exhaust gas purification device
    99.
    发明授权
    Exhaust gas purification device 有权

    公开(公告)号：US11408318B2

    公开(公告)日：2022-08-09

    申请号：US17269408

    申请日：2019-08-30

    申请人： MITSUBISHI HEAVY INDUSTRIES, LTD.

    发明人： Hiroyuki Yoshimura ,  Katsumi Yano ,  Katsuhiro Yashiro ,  Akihiro Yamada ,  Satoru Shishido ,  Hironori Kishi

    IPC分类号： F01N3/20 ,  F01N3/08 ,  F01N3/10 ,  F01N3/24

    摘要： An exhaust gas purification device is disclosed provided with a denitration catalyst for reducing and removing nitrogen oxides in exhaust gas using ammonia as a reducing agent in a gas flow passage through which the exhaust gas discharged from a boiler flows, and which injects ammonia into the exhaust gas flowing through the gas flow passage on an upstream side of the denitration catalyst, including multiple disturbing plate support members, and a disturbing plate. The multiple disturbing plate support members are fixedly provided on a downstream side of the denitration catalyst and arranged extending linearly in a flow path cross section to cross the gas flow passage. The disturbing plate includes an exhaust gas flow facing surface exposed on an upstream side and is fixed to the disturbing plate support members so that a position thereof in the flow path cross section can be changed.

    CATALYZED PARTICULATE FILTER FOR SOOT REMOVAL FROM ENGINE EXHAUST
    100.
    发明申请
    CATALYZED PARTICULATE FILTER FOR SOOT REMOVAL FROM ENGINE EXHAUST 有权

    公开(公告)号：US20220241757A1

    公开(公告)日：2022-08-04

    申请号：US17595279

    申请日：2020-04-16

    申请人： HER MAJESTY THE QUEEN IN RIGHT OF CANADA AS REPRESENTED BY THE MINISTER OF NATURAL RESOURCES

    发明人： Lioudmila Nossova ,  Gianni Caravaggio

    IPC分类号： B01J23/50 ,  B01J21/06 ,  B01J37/04 ,  B01J37/08 ,  B01J6/00 ,  F01N3/10

    摘要： The invention discloses use of a catalyzed particulate filter loaded with a silver-zirconia catalyst prepared by citric acid-assisted sol-gel method for soot removal from engine exhaust. The invention discloses a method of making xAg/ZrO2 where x is 20 mol %, said method comprises: mixing aqueous solutions of AgNO3 and ZrO(NO3)2 hydrate to produce a first mixture, adding an aqueous solution of citric acid to the first mixture, wherein the molar ratio of metal ions to citric acid is about 1:3 to produce a second mixture; heating the second mixture to about 80-90° C. to evaporate excess water in the second mixture to form a viscous gel, charring the viscous gel at about 200° C. for about 12 hours to produce a foam-like material, grounding the foam-like material to form a grounded material, and calcinating the grounded material at 500° C. for about 10 hours.