Selective NOx recirculation (SNR), involving adsorption, selective external recirculation and decomposition of the NOx by the combustion process, is itself a promising technique to abate NOx emissions. Three types of materials containing Ba: barium aluminate, barium tin perovskite and barium Y-zeolites have been developed to adsorb NOx under lean-burn or Diesel conditions, with or without the presence of S02. All these materials adsorb NO2 selectively (lean-burn conditions), and store it as nitrate/nitrite species. The desorption takes place by decomposition of these species at higher temperatures. Nitrate formation implies also sulfate formation in the presence of SO2 and SO3, while the NO2/SO2 competition governs the poisoning of such catalysts.


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    Titel :

    Reduction of NOx in Lean Exhaust by Selective NOx-Recirculation (SNR-Technique) Part II: NOx Storage Materials


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Monticelli, 0. (Autor:in) / Kiennemann, A. (Autor:in) / Kasemo, B. (Autor:in) / Krutzsch, B. (Autor:in) / Petit, C. (Autor:in) / Webster, D. E. (Autor:in) / Chaize, E. (Autor:in) / Wenninger, G. (Autor:in) / Martens, J. A. (Autor:in) / Weibel, M. (Autor:in)

    Kongress:

    International Fall Fuels and Lubricants Meeting and Exposition ; 1998



    Erscheinungsdatum :

    1998-10-19




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch







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