The electrocatalytic oxidation of glycerol has been investigated on platinum-palladium alloy electrodes of different compositions in alkaline aqueous solution. The surface characteristics of the alloys in conctact with the electrolytic solution have been studied using cyclic voltammetry. Enhanced electrocatalytic activity is obtained when the alloy contains about 33 % Pd when compared to pure metals, thus leading to a synergistic effect. Reaction products have been investigated by FTIRS on the alloy electrode. The present work supports the proposed mechanism of the appearance of a high catalytic activity of Pt + Pd alloy for glycerol electrooxidation.