Hydrothermally stable catalyst for improved lean NOx reduction
    5.
    发明授权
    Hydrothermally stable catalyst for improved lean NOx reduction 有权
    水热稳定的催化剂用于改善贫氧NOx的还原

    公开(公告)号:US06645448B2

    公开(公告)日:2003-11-11

    申请号:US09982583

    申请日:2001-10-18

    IPC分类号: F01N310

    摘要: Certain metal-exchanged SUZ-4 zeolites have been prepared that have catalytic activity for the reduction of NOx in the exhaust of a hydrocarbon or alcohol fueled engine operated under fuel lean conditions. Initially the SUZ-4 zeolite contains alkali metal cations such as Li+, Na+, K+ and/or Cs+. These alkali metal cation-containing zeolites are partially exchanged with at least one of copper (II), silver (I), iron (III) or cobalt (II) ions. The resulting partially exchanged SUZ-4 zeolites display such activity and are stable under extreme hydrothermal aging conditions.

    摘要翻译: 已经制备了一些金属交换的SUZ-4沸石,其具有催化活性,用于在燃料贫乏条件下运行的烃或醇燃料发动机的排气中还原NOx。 最初,SUZ-4沸石含有碱金属阳离子如Li +,Na +,K +和/或Cs +。 这些含碱金属阳离子的沸石与铜(II),银(I),铁(III)或钴(II)离子中的至少一种部分交换。 得到的部分交换的SUZ-4沸石显示出这种活性,并且在极端的水热老化条件下是稳定的。

    Hydrothermally stable catalyst for improved lean NOx reduction
    10.
    发明授权
    Hydrothermally stable catalyst for improved lean NOx reduction 有权
    水热稳定的催化剂用于改善贫氧NOx的还原

    公开(公告)号:US06936562B2

    公开(公告)日:2005-08-30

    申请号:US10654800

    申请日:2003-09-04

    摘要: Certain metal-exchanged SUZ-4 zeolites have been prepared that have catalytic activity for the reduction of NOx in the exhaust of a hydrocarbon or alcohol fueled engine operated under fuel lean conditions. Initially the SUZ-4 zeolite contains alkali metal cations such as Li+, Na+, K+ and/or Cs+. These alkali metal cation-containing zeolites are partially exchanged with at least one of copper (II), silver (I), iron (III) or cobalt (II) ions. The resulting partially exchanged SUZ-4 zeolites display such activity and are stable under extreme hydrothermal aging conditions.

    摘要翻译: 已经制备了一些金属交换的SUZ-4沸石,其具有催化活性,用于在燃料贫乏条件下运行的烃或醇燃料发动机的排气中还原NOx。 最初,SUZ-4沸石含有碱金属阳离子,例如Li +,Na +,+和/或Cs + / SUP>。 这些含碱金属阳离子的沸石与铜(II),银(I),铁(III)或钴(II)离子中的至少一种部分交换。 得到的部分交换的SUZ-4沸石显示出这种活性,并且在极端的水热老化条件下是稳定的。