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    Promoted catalytic performances of highly dispersed V-doped SBA-16 catalysts for oxidative dehydrogenation of ethane to ethylene

    Access Status
    Fulltext not available
    Authors
    Kong, L.
    Li, J.
    Liu, Q.
    Zhao, Z.
    Sun, Q.
    Liu, Jian
    Wei, Y.
    Date
    2016
    Type
    Journal Article
    
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    Citation
    Kong, L. and Li, J. and Liu, Q. and Zhao, Z. and Sun, Q. and Liu, J. and Wei, Y. 2016. Promoted catalytic performances of highly dispersed V-doped SBA-16 catalysts for oxidative dehydrogenation of ethane to ethylene. Journal of Energy Chemistry. 25 (4): pp.577-586.
    Source Title
    Journal of Energy Chemistry
    DOI
    10.1016/j.jechem.2016.04.004
    ISSN
    2095-4956
    School
    Department of Chemical Engineering
    URI
    http://hdl.handle.net/20.500.11937/19527
    Collection
    • Curtin Research Publications
    Abstract

    © 2016. V-doped SBA-16 catalysts (V-SBA-16) with 3D nanocage mesopores have been successfully synthesized by a modified one-pot method under weak acid condition. The obtained materials were characterized by means of small angle XRD, N2 adsorption-desorption, TEM, UV-Vis and UV-Raman spectroscopy. These characterization results indicated that well-order mesoporous structures were maintained even at higher vanadium loadings and high concentration of VO x species were incorporated into the framework of SBA-16 support. The catalytic performances of V-SBA-16, V/SBA-16 and V/SiO2 catalysts were comparatively investigated for the oxidative dehydrogenation of ethane to ethylene. The highest selectivity to ethylene of 63.3% and ethylene yield of 25.6% were obtained over 1.0V-SBA-16 catalyst. The superior catalytic performance of V-SBA-16 catalysts could be attributed to the presence of isolated framework VO x species, the unique structure of SBA-16 support and weak acidity. Moreover, V/SiO2 catalyst exhibited relatively poor catalytic activity duo to the formation of V2O5 nanoparticles on the surface of SiO2 support and the low dispersion of VO x species. These results indicated that the catalytic performances of the studied catalysts were strongly dependent on the vanadium loading, the nature and neighboring environment of VO x species and the structure of support.

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