Abstract

The electrooxidation of small organic molecules proceeds via a complex reaction network, involving a number of stable, adsorbed or desorbed (volatile) reaction intermediates and side products in addition to the main product. These reaction networks will be discussed for a number of C1-C3 molecules, focusing on the electrooxidation of ethanol. The discussion is based on ATR-FTIRS/DEMS flow cell measurements, where in-situ IR spectroscopy in an ATR configuration is employed for the detection of adsorbed reaction intermediates and the product distribution is quantitatively determined via on-line DEMS. The implications on the mechanism of the electrooxidation of small organic molecules will be addressed.

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