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    OHMIC HEATING-TYPE EXHAUST GAS PURIFICATION CATALYST SYSTEM AND EXHAUST GAS PURIFICATION METHOD
    31.
    发明公开
    OHMIC HEATING-TYPE EXHAUST GAS PURIFICATION CATALYST SYSTEM AND EXHAUST GAS PURIFICATION METHOD 审中-公开

    公开(公告)号：EP4268954A1

    公开(公告)日：2023-11-01

    申请号：EP22752632.4

    申请日：2022-02-01

    申请人： CATALER CORPORATION

    发明人： ONOE, Ryota ,  HORI, Junichi ,  TAKASU, Ryosuke ,  OHASHI, Tatsuya ,  OISHI, Shunsuke

    IPC分类号： B01J35/02 ,  B01J35/04 ,  F02D29/02 ,  B01D53/94 ,  F01N3/10 ,  F01N3/20 ,  F01N3/28

    摘要： The present invention provides an ohmic heating-type exhaust gas purification catalyst system. The ohmic heating-type exhaust gas purification catalyst system is configured to perform, based on information of temperature of a catalyst bed input from a temperature detector of an ohmic heating-type exhaust gas purification device, electric current pass control including controls of (1) causing an electric current to pass through a pair of electrodes when the temperature of the catalyst bed is equal to or lower than a first threshold temperature T1 set in a range of 350 ± 25 °C, (2) not causing an electric current to pass through the pair of electrodes when the temperature of the catalyst bed exceeds the first threshold temperature T1 and is equal to or lower than a second threshold temperature T2 set in a range of 450 ± 25 °C, (3) causing an electric current caused to pass through the pair of electrodes when the temperature of the catalyst bed exceeds the second threshold temperature T2 and is equal to or lower than a third threshold temperature T3 set to be equal to or higher than 550 °C, and (4) not causing an electric current to pass through the pair of electrodes when the temperature of the catalyst bed exceeds the third threshold temperature T3.

    CATALYST FOR PURIFYING EXHAUST GAS
    32.
    发明公开
    CATALYST FOR PURIFYING EXHAUST GAS 审中-公开

    公开(公告)号：EP3932550A1

    公开(公告)日：2022-01-05

    申请号：EP20778063.6

    申请日：2020-03-10

    申请人： CATALER CORPORATION

    发明人： NOGUCHI, Takahiro ,  ONOE, Ryota ,  TASAKI, Ryo ,  IWAI, Momoko ,  MATSUSHITA, Yamato

    IPC分类号： B01J35/04 ,  B01D53/94 ,  F01N3/10 ,  F02M21/02 ,  B01J23/63

    摘要： The present invention provides an exhaust gas purification catalyst having excellent removal performance of methane, which is chemically stable. An exhaust gas purification catalyst 5 according to the present invention includes a substrate 10 that divides cells 12 through which an exhaust gas flows and a catalyst layer 20 that is provided on a surface of the substrate 10. The catalyst layer 20 includes a palladium layer 21 containing palladium that extends from a first end part 10a which is an end part on the side of the cells 12 into which an exhaust gas flows to a second end part 10b which is an end part on the side from which an exhaust gas flows out, a platinum layer 22 containing platinum that extends from the second end part 10b to the first end part 10a, and a rhodium layer 23 containing rhodium that is laminated on both the palladium layer 21 and the platinum layer 22. The Pd layer 21 contains an alkaline earth metal at a content of 0.04 mol or more and 0.16 mol or less per 100 g of the Pd layer. In the Pt layer 22, an alkaline earth metal content per 100 g of the Pt layer is limited to 0.03 mol or less.

    CATALYST FOR PURIFYING EXHAUST GAS
    33.
    发明公开
    CATALYST FOR PURIFYING EXHAUST GAS 审中-公开

    公开(公告)号：EP3925701A1

    公开(公告)日：2021-12-22

    申请号：EP20778328.3

    申请日：2020-03-10

    申请人： CATALER CORPORATION

    发明人： NOGUCHI, Takahiro ,  ONOE, Ryota ,  TASAKI, Ryo ,  IWAI, Momoko ,  MATSUSHITA, Yamato

    IPC分类号： B01J35/04 ,  B01D53/94 ,  F01N3/10 ,  F01N3/28 ,  B01J23/63

    摘要： The present invention provides an exhaust gas purification catalyst having excellent removal performance of methane, which is chemically stable. An exhaust gas purification catalyst 5 according to the present invention includes a substrate 10 that divides cells 12 through which an exhaust gas flows and a catalyst layer 20 that is provided on a surface of the substrate 10. The catalyst layer 20 includes a palladium layer 21 containing palladium that extends from a first end part 10a which is an end part on the side into which an exhaust gas in the cells 12 flows to a second end part 10b which is an end part on the side from which an exhaust gas flows out, a platinum layer 22 containing platinum that extends from the second end part 10b to the first end part 10a, and a rhodium layer 23 containing rhodium that is laminated with both the palladium layer 21 and the platinum layer 22.

    CATALYST FOR EXHAUST GAS PURIFICATION
    36.
    发明公开
    CATALYST FOR EXHAUST GAS PURIFICATION 审中-公开

    公开(公告)号：EP3427824A1

    公开(公告)日：2019-01-16

    申请号：EP17766628.6

    申请日：2017-03-13

    申请人： Cataler Corporation

    发明人： ONOE, Ryota ,  ITO, Kazuhiko ,  HARADA, Takahiro ,  KASUYA, Chihiro

    IPC分类号： B01J23/63 ,  B01D53/94 ,  B01J35/04 ,  F01N3/10 ,  F01N3/28

    摘要： Provided is an exhaust gas purification catalyst of OSC material-containing type that allows a favorable HC purification (oxidation) treatment to be performed even in a case where HC emissions are comparatively large, such as during engine startup.
    The exhaust gas purification catalyst of the present invention includes, as a catalyst layer (20), a front section (24) positioned upstream in an exhaust gas flow direction, and a rear section (26) positioned downstream of the front section in the exhaust gas flow direction. The front section contains Pd as a catalyst metal but does not contain an OSC material.
    The proportion, at which the front section is formed from the upstream leading end in the exhaust gas flow direction, is 10% to 40% with respect to 100% of a total length of the substrate (1) in the exhaust gas flow direction.

    PARTICULATE FILTER
    39.
    发明公开
    PARTICULATE FILTER 审中-实审

    公开(公告)号：EP4335548A1

    公开(公告)日：2024-03-13

    申请号：EP22824925.6

    申请日：2022-06-10

    申请人： CATALER CORPORATION

    发明人： ITO, Masaya ,  ONOE, Ryota ,  TASAKI, Ryo ,  IWAI, Momoko ,  MATSUSHITA, Yamato

    IPC分类号： B01J35/04 ,  B01D53/94 ,  B01J23/63 ,  F01N3/022 ,  F01N3/035 ,  F01N3/10 ,  F01N3/24 ,  F01N3/28

    摘要： According to the present invention, a wall-flow type particulate filter in which pressure loss is suppressed despite a large formation region of a catalyst layer is provided. The particulate filter disclosed herein includes a wall-flow type base material and a catalyst layer formed on the base material. The base material includes an inlet side cell whose only end part on an exhaust gas entry side is open, an outlet side cell whose only end part on an exhaust gas exit side is open, and a partition wall that sections between the inlet side cell and the outlet side cell and includes a plurality of pores communicating between the inlet side cell and the outlet side cell. A first catalyst layer is formed on a surface of the partition wall that is in contact with the inlet side cell. The first catalyst layer is provided in a region over 80% of a total length of the base material from an end part of the base material on the exhaust gas entry side toward an end part thereof on the exhaust gas exit side. In at least a region from a position corresponding to 20% of the total length of the base material to a position corresponding to 80% thereof, from the end part of the base material on the exhaust gas entry side, the first catalyst layer is inclined so that a thickness of the first catalyst layer decreases from the end part on the exhaust gas entry side toward the end part on the exhaust gas exit side.

    PARTICULATE FILTER
    40.
    发明公开
    PARTICULATE FILTER 审中-公开

    公开(公告)号：EP3971397A1

    公开(公告)日：2022-03-23

    申请号：EP20833399.7

    申请日：2020-06-26

    申请人： CATALER CORPORATION

    发明人： TASAKI, Ryo ,  ONOE, Ryota ,  IWAI, Momoko ,  MATSUSHITA, Yamato

    IPC分类号： F01N3/035 ,  B01D46/00 ,  B01D53/94 ,  B01J23/58 ,  B01J35/04 ,  F01N3/28

    摘要： A particulate filter disclosed herein includes a wall-flow structure substrate 10 and a wash coat layer 20 held inside a partition 16 of the substrate 10. The wash coat layer 20 includes an inlet layer 22 formed to have predetermined length L A and thickness T A from near an end thereof on an exhaust gas inflow side X1, and an outlet layer 24 formed to have predetermined length L B and thickness T B from near an end thereof on an exhaust gas outflow side X2. The inlet layer 22 and the outlet layer 24 partially overlap each other. In the particulate filter disclosed herein, the inlet layer 22 contains a precious metal catalyst, while the outlet layer 24 contains substantially no precious metal catalyst. The length L A of the inlet layer is 50% or more and 75% or less of a total length L of the partition 16. Thus, the particulate filter is capable of achieving both PM collection performance and pressure-drop reduction performance at high levels.