This paper describes two independent studies on γ-alumina as a plasma-activated catalyst. γ-alumina (2.5 - 4.3 wt%) was coated onto the surface of mesoporous silica to determine the importance of aluminum surface coordination on NOx conversion in conjunction with nonthermal plasma. Results indicate that the presence of 5- and 6- fold aluminum coordination sites in γ-alumina could be a significant factor in the NOx reduction process. A second study examined the effect of changing the reducing agent on NOx conversion. Several hydrocarbons were examined including propene, propane, isooctane, methanol, and acetaldehyde. It is demonstrated that methanol was the most effective reducing agent of those tested for a plasma-facilitated reaction over γ-alumina.


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    Title :

    Plasma-Facilitated SCR of NOx in Heavy-Duty Diesel Exhaust


    Additional title:

    Sae Technical Papers


    Contributors:
    Habeger, C. F. (author) / Aardahl, C. L. (author) / Tran, D. N. (author) / Rappé, K. G. (author) / Wang, L.-Q. (author) / Delgado, M. A. (author) / Balmer, M. L. (author) / Park, P. W. (author)

    Conference:

    Spring Fuels & Lubricants Meeting & Exhibition ; 2002



    Publication date :

    2001-09-24




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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