In this work, an alternative method is proposed and validated for quantifying the axial performance of a state-of-the-art Cu zeolite SCR catalyst. Catalyst cores of a standard length, with varying lengths of wash-coated regions were used to axially resolve the functional performance of the SCR catalyst. This proposed method was validated by quantifying the catalyst entrance and exit effects, as well as the effect of non-uniform wash-coat loading densities. This method is less susceptible to some of the complications highlighted in the previous studies, such as flow uniformity between channels, as well as radiative heating effects, since the product gases are sampled across the entire monolith cross-section rather than through a single catalyst channel. The specific catalyst functions quantified include: NO and NH₃ oxidation, NH₃ storage capacity, as well as NOx conversion efficiency. The NOx conversion performance of the catalyst was evaluated for both the standard (NO₂/NOx=0) and fast (NO₂/NOx=0.5) SCR reactions as a function of both axial length and catalyst operating temperature.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Axially Resolved Performance of Cu-Zeolite SCR Catalysts


    Weitere Titelangaben:

    Sae Int. J. Engines


    Beteiligte:
    Yezerets, Aleksey (Autor:in) / Henry, Cary (Autor:in) / Chen, Hai-Ying (Autor:in) / Kamasamudram, Krishna (Autor:in) / Castagnola, Mario (Autor:in) / Currier, Neal (Autor:in)

    Kongress:

    SAE 2012 World Congress & Exhibition ; 2012


    Erschienen in:

    Erscheinungsdatum :

    2012-04-16


    Format / Umfang :

    10 pages




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Axially Resolved Performance of Cu-Zeolite SCR Catalysts

    Henry, C. / Kamasamudram, K. / Currier, N. et al. | British Library Conference Proceedings | 2012


    2012-01-1084 Axially Resolved Performance of Cu-Zeolite SCR Catalysts

    Henry, C. / Kamasamudram, K. / Currier, N. et al. | British Library Conference Proceedings | 2012


    Performance of Zeolite-Based Diesel Catalysts

    König, Axel / Standt, Ulrich-D. | SAE Technical Papers | 1995


    Performance of zeolite-based diesel catalysts

    Standt,U.D. / Koenig,A. / Volkswagen,Wolfsburg,DE | Kraftfahrwesen | 1995


    Evaluation of spacially resolved performance of NOx absorber catalysts

    Li,J. / Currier,N.W. / Yezerets,A. et al. | Kraftfahrwesen | 2009