SPECTROSCOPIC INVESTIGATIONS OF C3-PRIMARY ALCOHOLS ON PLATINUM-ELECTRODES IN ACID-SOLUTIONS .3. PROPARGYL ALCOHOL

Electro-oxidation and electroreduction of propargyl alcohol (PA) on Pt electrodes in acid solutions was studied using differential electroch emical mass spectrometry and in-situ Fourier transform IR spectroscopy . The main electro-oxidation product is CO2. Only very small amounts o f propargyl aldehyde are detected at high potentials. Electroreduction of PA yields mainly propane, propylene, propanol, allyl alcohol and s mall amounts of propyne and ethane. Hydrogenation of the strongly adso rbed residues of PA produces hydrocarbons but not alcohols.