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    EXHAUST GAS PURIFICATION CATALYST
    3.
    发明申请
    EXHAUST GAS PURIFICATION CATALYST 审中-公开

    公开(公告)号：US20190136730A1

    公开(公告)日：2019-05-09

    申请号：US16307345

    申请日：2017-06-05

    Applicant: CATALER CORPORATION

    Inventor： Takashi ONOZUKA ,  Kyosuke MURAKAMI ,  Kenichi TAKI

    IPC: F01N3/10 ,  B01J23/63 ,  B01J37/02

    Abstract: The exhaust gas purification catalyst according to the present invention includes a substrate 10 and a catalyst coat layer 30. The catalyst coat layer 30 is formed into a multilayer structure having a lower layer 32, a middle layer 34 and an upper layer 36. The upper layer 36 contains Rh and a Ce-containing oxide. The lower layer 32 contains Pd and a Ce-containing oxide. The middle layer 34 is a Ce-free layer that contains Pd but does not contain a Ce-containing oxide. A ratio (B/A) of the content B of Ce in the lower layer 32 to the content A of Ce in the upper layer 36 satisfies 2≤(B/A).

    CATALYST FOR EXHAUST GAS PURIFICATION
    4.
    发明申请
    CATALYST FOR EXHAUST GAS PURIFICATION 审中-公开
    催化剂用于排气净化

    公开(公告)号：US20160288100A1

    公开(公告)日：2016-10-06

    申请号：US15037829

    申请日：2014-11-25

    Applicant: CATALER CORPORATION

    Inventor： Takashi GOTO ,  Kenichi TAKI ,  Satoshi MATSUEDA

    IPC: B01J23/63 ,  B01J35/00 ,  B01J35/04 ,  B01J37/02 ,  B01J37/08

    CPC classification number: B01J23/63 ,  B01D53/9468 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/407 ,  B01D2255/908 ,  B01J23/002 ,  B01J35/0006 ,  B01J35/04 ,  B01J37/0236 ,  B01J37/0244 ,  B01J37/0248 ,  B01J37/08

    Abstract: An object of the present invention is to provide a catalyst for exhaust gas purification, by which exhaust gas can be efficiently purified within a wide temperature range from low to high temperatures. This object can be achieved by using a catalyst for exhaust gas purification, containing a substrate, a lower layer disposed on the substrate, and an upper layer disposed on the lower layer, wherein the lower layer contains: a lower catalytic layer that contains a first material having oxygen storage/release capacity and a first catalytic metal supported on the first material; and a non-catalytic layer that contains a second material having oxygen storage/release capacity but does not contain catalytic metal; in which the lower catalytic layer and the non-catalytic layer are laminated in any order; and an upper catalytic layer that contains a second catalytic metal.

    Abstract translation: 本发明的目的是提供一种用于废气净化的催化剂，通过该催化剂可以在从低温到高温的宽温度范围内有效地净化废气。 该目的可以通过使用用于排气净化的催化剂，包含基板，设置在基板上的下层和设置在下层上的上层来实现，其中下层包含：下层催化剂层，其包含第一 具有储氧/释放能力的材料和支撑在第一材料上的第一催化金属; 以及含有具有储氧/释放能力但不含催化金属的第二材料的非催化层; 其中下部催化剂层和非催化剂层以任何顺序层压; 和含有第二催化金属的上部催化剂层。

    EXHAUST GAS CLEANING CATALYTIC DEVICE
    7.
    发明申请
    EXHAUST GAS CLEANING CATALYTIC DEVICE 有权

    公开(公告)号：US20220152593A1

    公开(公告)日：2022-05-19

    申请号：US17435840

    申请日：2020-03-23

    Applicant: CATALER CORPORATION

    Inventor： Tomohiro CHIBA ,  Kyosuke MURAKAMI ,  Kenichi TAKI ,  Shunsuke HAGA

    IPC: B01J23/63 ,  B01J21/06 ,  B01J37/02

    Abstract: This exhaust gas cleaning catalytic device includes a base material and a first catalyst coat layer on the base material. The first catalyst coat layer has a pre-stage section on an exhaust gas flow upstream side, and a post-stage section on an exhaust gas flow downstream side. The first catalyst coat layer pre-stage section and post-stage section each contain inorganic oxide particles and rhodium supported by the inorganic oxide particles, while at least some of the inorganic oxide particles contain ceria. The ceria amount per unit length of the first catalyst coat layer post-stage section is larger than the ceria amount per unit length of the first catalyst coat layer pre-stage section. The first catalyst coat layer pre-stage section is disposed in such a manner that the end portion on the exhaust gas flow upstream side thereof is in direct contact with the exhaust gas flow.

    EXHAUST GAS PURIFICATION DEVICE
    8.
    发明申请
    EXHAUST GAS PURIFICATION DEVICE 审中-公开

    公开(公告)号：US20190015820A1

    公开(公告)日：2019-01-17

    申请号：US16071444

    申请日：2017-01-19

    Applicant: CATALER CORPORATION

    Inventor： Chihiro KASUYA ,  Kenichi TAKI ,  Satoshi MATSUEDA ,  Sho HOSHINO

    IPC: B01J23/63 ,  B01D53/94 ,  B01J27/053 ,  B01J37/08 ,  B01J35/00 ,  F01N3/10 ,  F01N3/28

    Abstract: An exhaust gas purification device which has improved exhaust gas purification performance. An exhaust gas purification device which includes a first catalyst layer that contains: a Pd-supporting catalyst which is obtained by having alumina carrier particles support Pd; a first Rh-supporting catalyst which is obtained by having first ceria-zirconia carrier particles support Rh; and second ceria-zirconia carrier particles. This exhaust gas purification device is configured such that: the ceria concentration in the first ceria-zirconia carrier particles is 30 wt % or less; and the amount of ceria in the second ceria-zirconia carrier particles is larger than the amount of ceria in the first ceria-zirconia carrier particles.

    EXHAUST GAS PURIFYING CATALYST
    10.
    发明申请
    EXHAUST GAS PURIFYING CATALYST 审中-公开

    公开(公告)号：US20190083932A1

    公开(公告)日：2019-03-21

    申请号：US16086865

    申请日：2017-03-13

    Applicant: CATALER CORPORATION

    Inventor： Takashi Onozuka ,  Kenichi TAKI ,  Kyosuke MURAKAMI

    IPC: B01D53/94 ,  B01J23/44 ,  B01J23/46 ,  B01J23/10 ,  B01J35/00 ,  B01J35/04 ,  B01J37/02 ,  F01N3/28

    Abstract: An exhaust gas purifying catalyst according to the present invention is provided with a base material 10 and a catalyst-coated layer 30. The catalyst-coated layer 30 is provided with a lower layer 34 and an upper layer 32. The upper layer 32 contains Rh and/or Pt as a noble metal catalyst. The lower layer 34 contains Pd as a noble metal catalyst. The lower layer 34 is provided with a front-stage lower layer 34a positioned on an upstream side and a rear-stage lower layer 34b positioned on a downstream side. The front-stage lower layer 34a is a Ce-free layer that does not contain a Ce-containing oxide. The rear-stage lower layer 34b is a Ce-containing layer that contains a Ce-containing oxide with a pyrochlore structure.

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