CO as a Probe Molecule to Study Surface Adsorbates during Electrochemical Oxidation of Propene

EC-MS and ATR-FTIR are used to probe adsorbates formed during electrochemical propene oxidation, with CO as a displacement agent. At least two distinct classes of propene intermediates are identified – some reactive, some blocking – via CO displacement, electrochemical stripping, and a redshift in the ν(C−O) IR mode.