Abstract
Fe/Al2O3 catalysts with different Fe loadings (10–90mol%) were prepared by hydrothermal method. Ethanol decomposition was studied over these Fe/Al2O3 catalysts at temperatures between 500 and 800°C to produce hydrogen and multi-walled carbon nanotubes (MWCNTs) at the same time. The results showed that the catalytic activity and stability of Fe/Al2O3 depended strongly on the Fe loading and reaction temperature. The Fe(30mol%)/Al2O3 and Fe(40mol%)/Al2O3 were both the effective catalyst for ethanol decomposition into hydrogen and MWCNTs at 600°C. Several reaction pathways were proposed to explain ethanol decomposition to produce hydrogen and carbon (including nanotube) at the same time.
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