Electrooxidation of acetaldehyde on a carbon supported Pt catalyst at elevated temperature/pressure: An on-line differential electrochemical mass spectrometry study

► Electrooxidation of acetaldehyde/acetic acid was studied at high temperatures up to 100 °C. ► Measurements were performed under fuel cell relevant conditions on Pt catalysts. ► Combined mass spectrometric and electrochemical measurements show distinct temperature effects. ► Acetaldehyde: the fraction of CO2 formation increases with temperature. ► Acetic acid: the activity on Pt catalysts is very low even at 100 °C.