Selective photooxidation of alcohols as test reaction for photocatalytic activity
作者： F.J. López-Tenllado , A. Marinas , F.J. Urbano , J.C. Colmenares , M.C. Hidalgo
DOI: 10.1016/J.APCATB.2012.02.015
关键词:
摘要: Abstract Twenty-four different titania-based systems synthesized through the sol–gel process varying precursor (titanium isopropoxide or tetrachloride) and/or ageing conditions (magnetic stirring, ultrasounds, microwave reflux) were tested for liquid-phase selective photooxidation of 2-butenol (crotyl alcohol) to 2-butenal (crotonaldehyde) and gas-phase 2-propanol acetone. To best our knowledge, former is suggested first time as test reaction photocatalytic activity. Interestingly, both reactions (despite having very reactant/catalyst ratio contact times) showed quite similar results in terms influence leading better than titanium metals (the presence iron, palladium zinc being detrimental activity whereas zirconium especially gold improved compared pure titania). mind, these give validity processes a fast screening catalysts tranformations. Finally, some gold-containing solids even Degussa P25.
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