The method of converting NOx with urea SCR is an effective solution for complying with the stringent NOx emission legislations of the future, particularly in the case of heavy duty diesel vehicles. In order to broaden the freedom of SCR catalyst design and volume design, a honeycomb structure formed with metal ion exchanged zeolite (NCH: New Concept Honeycomb) and for comparison a wash-coat type structure (conventional catalyst) were prepared. The possible range of catalyst volume reduction in NCH was investigated by comparative measurement of NH₃ adsorption distribution, consumption behavior of adsorbed NH₃ within the structures, and of space velocity and NO₂/NOx dependence of NOx conversion efficiency. In addition, from NEDC evaluation in an engine bench, it was found that combining urea injection logic suitable for NCH results in equal or higher NOx conversion efficiency and NH₃ slip characteristics with only 1/2 the volume of conventional catalyst structure. It was concluded that the application of NCH increases the degree of freedom in selecting the catalyst and designing the volume of catalyst.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Volume Reduction of SCR Catalyst Using Zeolite-Base Honeycomb Substrate


    Additional title:

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


    Contributors:

    Conference:

    SAE 2010 World Congress & Exhibition ; 2010



    Publication date :

    2010-04-12


    Size :

    11 pages




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Volume reduction of SCR catalyst using zeolite-base honeycomb substrate

    Ido,T. / Yoshimura,K. / Kunieda,M. et al. | Automotive engineering | 2010


    Extruded Zeolite Based Honeycomb Catalyst for NOx Removal from Diesel Exhaust

    Muench, Joerg / Leppelt, Rainer / Dotzel, Ralf | SAE Technical Papers | 2008


    Extruded zeolite based honeycomb catalyst for NOx removal from diesel exhaust

    Muench,J. / Leppelt,R. / Dotzel,R. et al. | Automotive engineering | 2008


    The NH3-SCR Performance of Fe/Zeolite Based Catalytic Honeycomb Substrate

    Ido, T. / Kunieda, M. / Miwa, Y. et al. | British Library Conference Proceedings | 2009


    The NH3-SCR Reaction Performance with Fe/Zeolite Based Catalytic Honeycomb Substrate

    Ohno, Kazushige / Yoshimura, Ken / Kunieda, Masafumi et al. | SAE Technical Papers | 2009