Intermediates and Products of Ethanol Oxidation on Platinum in Acid Solution

The adsorbate formed during ethanol oxidation in acidic solutions is studied by Fourier transform infrared reflection-absorption spectroscopy (FTIR) at constant potential, on-line (DEMS) and thermal desorption mass spectroscopy (ECTDMS). – As in the case of methanol adsorbate COad was identified by FTIR and in addition COHad by ECTDMS. On-line MS experiments showed the formation of methane during the cathodic sweep of the voltammogram. Main products of ethanol oxidation from the bulk are carbon dioxide and acetaldehyde.

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