The selective catalytic reduction of NO using urea (urea-SCR) is one of the promising technologies for removing NOx from diesel engine exhaust. The engine-out NOx is reduced by ammonia (NH3) derived from urea over a catalyst to environmentally benign N2. In this paper, we investigate the effect of various reactor operating conditions on the NOx reduction performance of three different catalyst formulations (e.g., Cu-zeolite, Fe-zeolite, Vanadium-based) to obtain useful guidance in the design and operation of urea-SCR lean NOx emission control systems. We examine the effects of NO:NO2 ratio on the steady-state NOx reduction activity at typical diesel engine exhaust temperatures (150-550°C). Transient measurements were also performed to determine the impact of NH3:NOx ratio and NH3 storage on catalyst performance. The impacts of hydrocarbon poisoning and sulfur poisoning/regeneration were also examined.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Evaluation of Supplier Catalyst Formulations for the Selective Catalytic Reduction of NOx With Ammonia


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:

    Kongress:

    Powertrain & Fluid Systems Conference & Exhibition ; 2005



    Erscheinungsdatum :

    24.10.2005




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Evaluation of supplier catalyst formulations for the selective catalytic reduction of NOx with ammonia

    Schmieg,S.J. / Lee,J.H. / General Motors Res.and Dev.Center,US | Kraftfahrwesen | 2005



    Observer-based estimation of selective catalytic reduction catalyst ammonia storage

    Hsieh,M.F. / Wang,J. / Ohio State Univ.,Columbus,US | Kraftfahrwesen | 2010