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    Exhaust gas-purifying three-way catalyst and method for producing same, and integral structure type exhaust gas-purifying catalyst
    1.
    发明授权
    Exhaust gas-purifying three-way catalyst and method for producing same, and integral structure type exhaust gas-purifying catalyst 有权

    公开(公告)号：US11484864B2

    公开(公告)日：2022-11-01

    申请号：US16962709

    申请日：2019-01-28

    申请人： N.E. CHEMCAT Corporation

    发明人： Hiroyuki Hara ,  Yuki Toya ,  Hiroki Nakayama ,  Takumi Nakamura

    IPC分类号： B01J23/63 ,  B01J35/10 ,  B01J37/08 ,  F01N3/10

    摘要： Provided is, for example, an exhaust gas-purifying three-way catalyst which is suppressed in particle growth due to sintering of a catalytically active component on a carrier in exposure to a high temperature and thus is enhanced in purification performance, and a method for producing the same, as well as an integral structure type exhaust gas-purifying catalyst using the same.
    The exhaust gas-purifying three-way catalyst of the present invention includes a composite particle which contains a base material particle having a pore size of 100 to 650 nm as measured by a mercury intrusion method and a catalytically active particle of a platinum group element supported on the base material particle, in which a content proportion of the catalytically active particle is 0.001 to 30% by mass in total in terms of metal of the platinum group element, based on a total amount of the composite particle.

    Exhaust gas purification device
    3.
    发明授权
    Exhaust gas purification device 有权

    公开(公告)号：US11047282B2

    公开(公告)日：2021-06-29

    申请号：US16482310

    申请日：2018-02-08

    申请人： N.E. CHEMCAT CORPORATION ,  National Agency for Automobile and Land Transport Technology

    发明人： Toshinori Okajima ,  Makoto Nagata ,  Nobunori Okui ,  Kyohei Yamaguchi

    IPC分类号： F01N3/20

    摘要： An exhaust gas purification device is capable of reducing the amount of NOx emissions generated at the time of cold start. An exhaust gas purification device includes a urea injection valve, a metal honeycomb, a temperature sensor, and an SCR catalyst in an exhaust passage. It is possible for an exhaust gas temperature of exhaust gas passing through the metal honeycomb to be increased by the metal honeycomb that is capable of being electrically heated by control executed by a control unit ECU. The exhaust gas temperature is detected by the temperature sensor. Based on a temperature-versus-ammonia adsorption amount profile stored in advance in a storage unit of the control unit ECU, ammonia is pre-adsorbed onto the metal honeycomb and the SCR catalyst, and the metal honeycomb is electrically heated at the time of cold start after the temperature detected by the temperature sensor becomes lower than 150° C.

    REACTION COMPOSITION AND REACTION SYSTEM USING THIS
    4.
    发明申请
    REACTION COMPOSITION AND REACTION SYSTEM USING THIS 审中-公开

    公开(公告)号：US20200299239A1

    公开(公告)日：2020-09-24

    申请号：US16084063

    申请日：2017-02-15

    申请人： N.E. CHEMCAT CORPORATION

    发明人： Hiroyasu Suzuka ,  Tomoteru Mizusaki ,  Yusuke Nakaya ,  Yoshiyuki Wada ,  Yukio Takagi

    IPC分类号： C07D213/73 ,  B01J23/89 ,  B01J21/18 ,  B01J35/10 ,  B01J35/02

    摘要： An aromatic nitro compound has a structure in which a nitro group and a halogen atom, in a separated state, are directly bonded as substituents to the ring structure of the same ring; a reaction composition is provided which, in a hydrogenation reaction of the nitro group of said aromatic nitro compound, allows selectively hydrogenating the nitro group, and sufficiently reducing the separation of the halogen atom from the ring; also provided is a reaction system that uses this reaction composition. This reaction composition includes a catalyst which, with the aforementioned aromatic nitro compound as reactant, is used in a hydrogenation reaction of at least one of the one or more nitro groups of said reactant. Further, the reaction composition includes a base and an organic solvent. The catalyst includes a carrier, and Fe oxide particles and Pt particles supported by the carrier.

    Method for producing gas diffusion electrode and method for producing membrane electrode assembly (MEA)
    6.
    发明授权
    Method for producing gas diffusion electrode and method for producing membrane electrode assembly (MEA) 有权

    公开(公告)号：US10333151B2

    公开(公告)日：2019-06-25

    申请号：US15567435

    申请日：2016-04-19

    申请人： N.E. CHEMCAT Corporation

    发明人： Yasuhiro Seki ,  Takuya Tsubaki ,  Hiroshi Igarashi

    IPC分类号： H01M4/92 ,  H01M4/88 ,  H01M8/1004 ,  H01M8/1018

    摘要： Provided is a method for producing a gas diffusion electrode, with which it is possible to more effectively improve electrode performance, in cases in which a core-shell catalyst is used as an electrode catalyst. This method for producing gas diffusion electrode comprises: a first step in which a support layer having electron conductivity, water-repellency and gas diffusion properties is soaked in water; a second step in which the constituent materials of ink for forming a catalyst layer are put into a mixer and mixed by agitation to prepare an ink for forming a catalyst layer; and a third step in which the ink for forming a catalyst layer is used to form a catalyst layer on the surface of the support layer obtained in the first step. The ink for forming the catalyst layer contains a core-shell catalyst, a polyelectrolyte, water and alcohol. The alcohol is only a polyvalent alcohol.