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  • influence of catalyst support structure on ethene/decene metathesis and coke formation over wo3/sio2 catalyst

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
    • تعداد بازدید: 1098
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     8wt%wo3/sio2 metathesis (disproportionation) catalysts with different pore structures were prepared by the incipient-wetness-impregnation method. the as-synthesized catalysts were characterized by n2 adsorption-desorption, scanning electron microscopy (sem), x-ray diffraction (xrd), uv-visible diffuse reflectance spectroscopy (drs) and scanning transmission electron microscopy-high-angle annular dark field (stem haadf). the results of stem haadf showed that wo3 species were not uniformly distributed on the sio2 support. the experimental results of 8wt%wo3/sio2 performance in ethene/decene metathesis revealed that the catalytic effect of 8wt%wo3/sio2 catalyst and coke formation over it were closely related to the support pore structure: the 8wt%wo3/sio2 catalyst with a more complicated pore structure showed better catalytic performance but the coke deposition rate was also faster

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