Investigation of formic acid oxidation on palladium in acidic solutions by on-line mass spectroscopy
Abstract A new insight into the electrochemical oxidation of formic acid on palladium is presented. On-line mass spectroscopy analysis of volatile products reveals the production of carbon dioxide not only in the double-layer region but also near 0.25 and 1.75 V. At these potentials the currents are masked by hydrogen oxidation and oxygen evolution, respectively, and the reaction has not been investigated so far. The presence of strongly adsorbed residues at small coverages is proved by on-line mass spectroscopy.