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    Facile synthesis of tube-shaped Mn-Ni-Ti solid solution and preferable Langmuir-Hinshelwood mechanism for selective catalytic reduction of NO<inf>x</inf>by NH<inf>3</inf>

    Access Status
    Fulltext not available
    Authors
    Liu, J.
    Li, X.
    Li, R.
    Zhao, Q.
    Ke, J.
    Xiao, H.
    Wang, L.
    Liu, Shaomin
    Tade, Moses
    Wang, Shaobin
    Date
    2018
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Liu, J. and Li, X. and Li, R. and Zhao, Q. and Ke, J. and Xiao, H. and Wang, L. et al. 2018. Facile synthesis of tube-shaped Mn-Ni-Ti solid solution and preferable Langmuir-Hinshelwood mechanism for selective catalytic reduction of NO<inf>x</inf>by NH<inf>3</inf>. Applied Catalysis A: General. 549: pp. 289-301.
    Source Title
    Applied Catalysis A: General
    DOI
    10.1016/j.apcata.2017.10.010
    ISSN
    0926-860X
    School
    Department of Chemical Engineering
    Funding and Sponsorship
    http://purl.org/au-research/grants/arc/DP150103026
    URI
    http://hdl.handle.net/20.500.11937/57671
    Collection
    • Curtin Research Publications
    Abstract

    © 2017 We present a tube-shaped Mn-Ni-Ti solid solution for the selective catalytic reduction of NO x with NH 3 (NH 3 -SCR) through a facile self-templated urea-homogeneous precipitation method, which leads to the fine dispersion of the MnO x and NiO x active species in the TiO 2 lattice. The ratio of Mn/Ni/Ti is an important factor to affect the crystallinity of Mn-Ni-Ti solid sulotion, and the catalyst with a Mn/Ni/Ti ratio of 2/3/5 (Mn2-Ni3) exhibits the significant structure distortion. The abundant surface defects induce more generation of Mn 4+ species, surface adsorbed oxygen and Lewis acid sites, and acclerate the adsorption and activation of NO molecules. The appropriate Mn/Ni ratio inhibits the competitive adsorption of NH 3 with NO, and facilitates the Langmuir-Hinshelwood (L-H) mechanism to form N 2 , which acts as a much more rapid pathway in comparison to the parallel one following Eley-Rideal (E-R) mechanism. The readily occurence of L-H mechanism significantly improves the SCR performance of catalyst.

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