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    Improved activity of W-modified MnOx-TiO2 catalysts for the selective catalytic reduction of NO with NH3

    Access Status
    Fulltext not available
    Authors
    Wang, X.
    Li, X.
    Zhao, Q.
    Sun, W.
    Tade, Moses
    Liu, S.
    Date
    2016
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Wang, X. and Li, X. and Zhao, Q. and Sun, W. and Tade, M. and Liu, S. 2016. Improved activity of W-modified MnOx-TiO2 catalysts for the selective catalytic reduction of NO with NH3. Chemical Engineering Journal. 288: pp. 216-222.
    Source Title
    Chemical Engineering Journal
    DOI
    10.1016/j.cej.2015.12.002
    ISSN
    1385-8947
    Faculty
    Faculty of Science and Engineering
    URI
    http://hdl.handle.net/20.500.11937/24210
    Collection
    • Curtin Research Publications
    Abstract

    The performances of a series of W-modified MnOx–TiO2 catalysts were investigated for selective catalytic reduction (SCR) of NOx with NH3. The catalyst prepared by one-pot co-precipitation method with an elementary ratio of W:Mn:Ti = 0.25:0.25:0.5 in raw materials showed a highest activity and a widest operation temperature window with 100% NOx conversion within 80–280 °C. We suggest that the enhancement in reducibility of manganese and dominant active Mn4+ species is likely one predominant factor accounting for the excellent SCR performance of the best catalyst. In situ FTIR studies revealed that after W doping, more Brønsted and Lewis acid sites formed on the catalyst surface, as well as more active intermediates (monodentate nitrate) during reaction, are also responsible for the high activity both at low and medium temperatures.

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