EXHAUST GAS PURIFICATION CATALYST
    1.
    发明公开

    公开(公告)号:EP4349483A1

    公开(公告)日:2024-04-10

    申请号:EP22845708.1

    申请日:2022-06-10

    摘要: According to the present invention, a novel exhaust gas purifying catalyst with HC and CO purification performance improved in a rich atmosphere is provided. The exhaust gas purifying catalyst disclosed herein includes a base material, a catalyst layer provided on the base material, and a reforming reaction layer provided on the base material. The catalyst layer includes a three-way catalyst. The reforming reaction layer includes a hydrogen generation catalyst. The reforming reaction layer is disposed at a position on a downstream side in a flowing direction of an exhaust gas relative to the catalyst layer.

    EXHAUST GAS PURIFICATION CATALYST DEVICE
    3.
    发明公开

    公开(公告)号:EP4241880A1

    公开(公告)日:2023-09-13

    申请号:EP21889051.5

    申请日:2021-10-21

    摘要: The present invention provides an exhaust gas purification catalyst device having a base material 110, an upstream-side lower coat layer 121, an upstream-side upper coat layer 122, a downstream-side lower coat layer 131, and a downstream-side upper coat layer 132, the exhaust gas purification catalyst device satisfying conditions (i) and (ii). (i) The concentration of Pt and/or Pd in the upstream-side upper coat layer 122 and the downstream-side lower coat layer 131 is greater than the concentration of Pt and/or Pd in the upstream-side lower coat layer 121, and is greater than the concentration of Pt and/or Pd in the downstream-side upper coat layer 132. (ii) The concentration of Rh in the upstream-side lower coat layer 121 and the downstream-side upper coat layer 132 is greater than the concentration of Rh in the upstream-side upper coat layer 122, and is greater than the concentration of Rh in the downstream-side lower coat layer 131.

    EXHAUST GAS CLEANING CATALYST
    6.
    发明公开

    公开(公告)号:EP4209452A1

    公开(公告)日:2023-07-12

    申请号:EP21891828.2

    申请日:2021-11-08

    摘要: An exhaust gas purifying catalyst 10 according to the present invention includes a base material 11, a reforming reaction layer 20 provided on the base material 11 and including at least one of a rare earth oxide and a transition metal oxide (except precious metal other than Rh and Ru) as a hydrogen generation catalyst that converts an unbumt component in exhaust gas into H 2 , and a catalyst layer 30 including precious metal that purifies the unbumt component. The content of the hydrogen generation catalyst in the reforming reaction layer 20 is 5 g/L or more per unit volume of the base material 11.

    CATALYST FOR EXHAUST GAS PURIFICATION
    7.
    发明公开

    公开(公告)号:EP3636340A1

    公开(公告)日:2020-04-15

    申请号:EP18831131.0

    申请日:2018-06-07

    摘要: The present invention provides an exhaust gas purification catalyst 10 having a substrate 11 having a wall flow structure, and a catalyst layer 20. The catalyst layer 20 has: an A section 20a provided in the interior of the partition wall 16, along an extension direction X of the partition wall 16, from an exhaust gas inflow end section 13; a C section 20c provided in the interior of the partition wall 16, along the extension direction X of the partition wall 16, from an exhaust gas outflow end section 15; and a B section 20b disposed between the A section 20a and the C section 20c in the extension direction X of the partition wall 16, and provided over the surface of the partition wall 16 on the side in contact with the inlet cell 12, the interior of the partition wall 16, and the surface of the partition wall 16 on the side in contact with the outlet cell 14.