VOLTAMMETRIC STUDY OF THE NATURE OF ADSORBED RESIDUES ARISING FROM IRREVERSIBLE ADSORPTION OF ACETALDEHYDE AND ETHANOL ON PT(111) IN ACID-MEDIA - 1ST OXIDATION PEAK

Irreversible adsorption of ethanol and acetaldehyde on Pt(111) in acid medium results in different adsorbed compounds. This paper describes a study of the nature of the adsorbed species, giving an anodic voltam metric peak at 0.56 V (vs. RHE). These species could be associated wit h one carbon atom species, because (i) the existence of adsorbed CO (i n the case of ethanol and acetaldehyde) implies the rupture of the C-C bond, and (ii) the electrochemical reduction of formaldehyde at poten tials lower than or equal to 0.1 V gives the peak at 0.56 V. This redu ction must give one carbon atom species.