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    VO x /SiO 2 Catalyst Prepared by Grafting VOCl 3 on Silica for Oxidative Dehydrogenation of Propane

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    Type
    Article
    Authors
    Zhu, Haibo
    Ould-Chikh, Samy cc
    Dong, Hailin
    Llorens, Isabelle
    Saih, Youssef
    Anjum, Dalaver H. cc
    Hazemann, Jean Louis
    Basset, Jean-Marie cc
    KAUST Department
    Chemical Science Program
    Electron Microscopy
    KAUST Catalysis Center (KCC)
    Date
    2015-09-07
    Online Publication Date
    2015-09-07
    Print Publication Date
    2015-10
    Permanent link to this record
    http://hdl.handle.net/10754/594247
    
    Metadata
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    Abstract
    The VOx/SiO2 catalysts for oxidative dehydrogenation of propane were synthesized by a simple grafting method. The VOCl3 was first grafted at the surface of SiO2, which was dehydrated at different temperature (from 200 to 1000°C). The formed grafted complexes were then calcined in air, leading to the formation of VOx/SiO2 catalysts. The synthesized catalysts were characterized by nitrogen adsorption, SEM, Raman spectroscopy, temperature-programmed reduction, and extended X-ray absorption fine structure analysis. The SiO2 pretreatment temperature has an evident effect on the loading and dispersion of VOx on SiO2, which finally affects their catalytic performance. High SiO2 treatment temperature is beneficial to dispersing the vanadium oxide species at the SiO2 surface. These materials are efficient catalysts for the catalytic oxidative dehydrogenation of propane to propylene. The best selectivity to propylene is achieved on the VOx/SiO2-(1000) catalyst. The high selectivity and activity are well maintained for three days catalytic reaction. © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
    Citation
    Zhu H, Ould-Chikh S, Dong H, Llorens I, Saih Y, et al. (2015) VO x /SiO 2 Catalyst Prepared by Grafting VOCl 3 on Silica for Oxidative Dehydrogenation of Propane . ChemCatChem 7: 3332–3339. Available: http://dx.doi.org/10.1002/cctc.201500607.
    Publisher
    Wiley
    Journal
    ChemCatChem
    DOI
    10.1002/cctc.201500607
    ae974a485f413a2113503eed53cd6c53
    10.1002/cctc.201500607
    Scopus Count
    Collections
    Articles; Chemical Science Program; KAUST Catalysis Center (KCC)

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