Catalytic oxidation of chlorophenol over V2O5/TiO2 catalysts
作者： Casey E. Hetrick , Janine Lichtenberger , Michael D. Amiridis
DOI: 10.1016/J.APCATB.2007.07.022
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摘要: Abstract Catalytic and in situ Fourier Transform Infrared (FTIR) spectroscopic studies were conducted to investigate the adsorption oxidation of o- p-chlorophenol over a 3.6 wt.% V2O5/TiO2 catalyst. At space velocity approximately 53,000 cm3 g−1 h−1, this catalyst was found be active for at temperatures as low 200 °C, yielding CO2 HCl main products. Trace amounts higher molecular weight products also detected reactor outlet indicating operation additional condensation, coupling chlorination/dechlorination side reactions parallel complete scheme. The FTIR revealed that different phenols adsorb on through their hydroxyl group. Furthermore, formation similar surface species (i.e., maleates, acetates, formates an aldehyde-type species) observed. results compared with those previous m-dichlorobenzene (m-DCB) benzene suggest reaction mechanism is operating all cases, although relative kinetic significance steps varies presence position chlorine groups aromatic ring.
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