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- W2074918580 abstract "Pulsed voltammetry has been used to study methanol oxidation in acid media on platinum stepped surfaces to determine the kinetics of the reaction and the role of the surface structure in the reactivity. From the current transients at different potentials, the intrinsic activity of the electrode through the active intermediate reaction path (jdir,ini), as well as the rate constant for the CO formation (kads) and CO oxidation (kox) have been calculated. The kinetics for methanol oxidation through the active intermediate reaction path is strongly dependent on the surface structure of the electrode, with the highest activity found for the Pt(1 0 0) surface. The presence of (1 1 1) and (1 0 0) steps, both on (1 0 0) and (1 1 1) terraces, respectively, does not increase the activity of these surfaces, while (1 1 0) steps do improve the catalytic activity. These results are compared to those obtained with formic acid and ethanol to better understand methanol oxidation reaction. Thus, it is obtained that first step in the mechanism is a dehydrogenation step, which is the slowest step in the process. Also, the effect of the anions in the oxidation process is studied." @default.
- W2074918580 created "2016-06-24" @default.
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- W2074918580 date "2011-11-01" @default.
- W2074918580 modified "2023-10-18" @default.
- W2074918580 title "The role of the surface structure in the oxidation mechanism of methanol" @default.
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- W2074918580 doi "https://doi.org/10.1016/j.jelechem.2011.02.032" @default.
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