利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

31 条记录 (耗时 0.017 秒)

    EXHAUST GAS PURIFICATION CATALYST
    10.
    发明公开
    EXHAUST GAS PURIFICATION CATALYST 审中-公开

    公开(公告)号：EP3736036A1

    公开(公告)日：2020-11-11

    申请号：EP20172041.4

    申请日：2020-04-29

    申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA ,  CATALER CORPORATION

    发明人： CHINZEI, Isao ,  MIURA, Masahide ,  NAKAHIGASHI, Seiji ,  SUZUKI, Hiromasa ,  YAMAMOTO, Toshio ,  MORIKAWA, Akira ,  KATOH, Satoru ,  ONOZUKA, Takashi ,  ORI, Hirotaka ,  OKADA, Mitsuyoshi ,  HOSHINO, Sho

    IPC分类号： B01D53/94 ,  B01J23/63 ,  B01J35/00 ,  B01J35/04 ,  B01J35/10 ,  F01N3/10

    摘要： The present disclosure provides the exhaust gas purification catalyst with the improved purification performance under the high Ga condition and the atmosphere where the A/F is rich. The present disclosure relates to an exhaust gas purification catalyst including a catalyst coating layer on a substrate, the catalyst coating layer containing a noble metal and a metal oxide, wherein in the catalyst coating layer: an average thickness of the coating layer is in a range from 50 µm to 100 µm; a porosity measured by a weight-in-water method is in a range from 50% by volume to 80% by volume; and high-aspect-ratio pores having an aspect ratio of 5 or more account for 0.5% by volume to 50% by volume of a whole volume of voids, the high-aspect-ratio pore having an equivalent circle diameter in a range from 2 µm to 50 µm in a cross-sectional image of a catalyst coating layer cross section perpendicular to an exhaust gas flow direction of the substrate and having an average aspect ratio in a range from 10 to 50, and wherein when a surface side in contact with an exhaust gas in a thickness direction of the catalyst coating layer is defined as 0% and a side in contact with the substrate is defined as 100%, 80 % by mass or more of a total amount of the noble metal is present in a range from 0% to 25% or more and 70% or less.