Temperature programmed reduction by CO, H2, and propylene (C3H6), as well as hydrothermal aging in the presence of mixture of NO, HC, CO, H2 and O2 were used to study the deactivation of Cu/zeolite SCR catalysts. The presence of CO had no detrimental effect on catalyst activity. Carbonaceous deposit on the catalyst surface from propylene (C3H6) reduction suppressed the catalyst activity and burn off of carbonaceous deposit recovered activity, the presence of O2 suppressed carbonaceous deposit formation. The presence of H2 under lean conditions had much less effect on catalyst activity than H2 presence under rich conditions. Rich conditions with O2 presence represented the most detrimental effect on catalyst activity.


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    Title :

    Deactivation of Cu/Zeolite SCR Catalyst Due To Reductive Hydrothermal Aging


    Additional title:

    Sae Int. J. Fuels Lubr
    Sae International Journal of Fuels and Lubricants


    Contributors:

    Conference:

    SAE World Congress & Exhibition ; 2008



    Publication date :

    2008-04-14


    Size :

    5 pages




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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