Journal of Industrial and Engineering Chemistry, Vol.10, No.2, 239-246, March, 2004
FTIR and TPD spectroscopic Studies of the Catalytic Hydrodeoxygenation Reaction of Furan
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Hydrodeoxygenation (HDO) reaction mechanism of in oxygen-containing heterocyclic compounds, which one present as impurities in fossil fuels and cause synthetic fuels to become unstable, was studied by the catalyst via hydrotreating process using sulfided Mo-Co/γ-Al2O3 catalyst. Fourier transform infrared (FTIR) spectroscopy was employed to study the adsorption structure of furan on the catalyst and it was concluded to be a 'tilted on-top mode' on the catalyst at low temperature. Temperature programmed desorption (TPD) spectroscopy was used to study the products formed by the catalytic reaction. It was found that the furan molecule was decomposed to CO and C3 hydrocarbon species at low temperature and turned into some products via two pathways of the surface reaction as the temperature increased, one of which produces H2O from the surface species combined with spiltover hydrogen atoms and the other to form O2.
Keywords:Temperature Programmed Desorption (TPD);FTIR;catalytic decomposition;alumina supported catalyst;Furan;Hydrodeoxygenation(HDO)
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