Differential electrochemical mass spectrometry using smooth electrodes : adsorption and H/D-exchange reactions of benzene on Pt

摘要: While previously a porous electrode fixed to hydrophobic membrane had be used as the inlet system for differential electrochemical mass spectrometry, newly designed thin-layer cell allows first time processes studied that occur on smooth electrode. The feasibility of new is demonstrated cathodic desorption benzene adsorbed annealed Pt in 0.5 M H{sub 2}SO{sub 4}. Partial occurs H region. Complete only achieved under hydrogenation cyclohexane at more negative potentials, where hydrogen evolution reaction takes place. No partially hydrogenated products are formed. Experiments which C{sub 6}D{sub 6} was show no C-D bond rupture upon adsorption. Various degrees H/D exchange adsorbate.