CATALYST FOR EXHAUST GAS PURIFICATION
    5.
    发明公开
    CATALYST FOR EXHAUST GAS PURIFICATION 审中-公开
    催化剂用于废气净化

    公开(公告)号:EP3254758A1

    公开(公告)日:2017-12-13

    申请号:EP16752472.7

    申请日:2016-02-16

    摘要: Provided is an exhaust gas purification catalyst that combines reduction of pressure loss and enhancement of purification performance. This invention provides an exhaust gas purification catalyst 10 comprising a wall-flow-type substrate and first and second catalytic layers 261 and 262. The first catalytic layer 261 is provided to the interior of a partition wall 26, in contact with an entrance cell 24, from an exhaust inlet-side end 24a in the running direction, having a length L 1 less than L w . The second catalytic layer 262 is provided to the interior of a partition wall 26, in contact with an exit cell 25, from an exhaust outlet-side end 25a in the running direction, having a length L 2 less than L w . An internal portion of partition wall 26 in contact with entrance cell 24 has a substrate-exposing segment 26N 1 near the exhaust outlet-side end 25a.

    摘要翻译: 本发明提供一种能够降低压力损失并提高净化性能的排气净化催化剂。 本发明提供一种废气净化催化剂10,其包括壁流式基板以及第一和第二催化剂层261和262.第一催化剂层261设置在分隔壁26的内部,与入口单元24接触 从行进方向上的排气入口侧端部24a开始,具有小于Lw的长度L1。 第二催化剂层262从长度L2小于Lw的行进方向的排气出口侧端部25a设置在与排出室25接触的隔壁26的内部。 与入口单元24接触的分隔壁26的内部部分在排气出口侧端部25a附近具有衬底暴露段26N1。