Abstract
In this research, a new kind of carbon nanotubes-silica fibrous composite (CNTs-SF) was successfully synthesized by the steam reforming of ethanol over a Ni/silica fiber catalyst prepared by electrospinning technique. The fibrous composite was then used as a support for the ethanol steam reforming by loading nickel at 5 and 10wt%. The prepared catalysts were characterized by BET, SEM, TEM, XRD, TPR, and TG/DTG. The reaction performance of the NiCNTs-SF catalysts was investigated and compared with the Ni/silica fiber (NiSF) and Ni/silica porous (NiSP) catalysts. The effect of temperatures on the ethanol conversion and product distribution was studied in the range of 300 and 500°C. The NiCNTs-SF catalyst exhibited the best performance in term of stability and high activity at lower reaction temperature. The outstanding performance of the NiCNTs-SF catalyst could be associated with highly metallic dispersion and easily accessible to the reactants.
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