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首页> 外文期刊>Journal of power sources >Electro-oxidation of 2-propanol on platinum in alkaline electrolytes
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Electro-oxidation of 2-propanol on platinum in alkaline electrolytes

机译：碱性电解质中2-丙醇在铂上的电氧化

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摘要

The potentiodynamic and potentiostatic electro-oxidations of 2-propanol over rough platinum electrodes were carried out in alkaline electrolytes. A substantive current maximum occurs at low potentials during potentiostatic electro-oxidations of 2-propanol in the presence of base. The magnitude of this current maximum increases as the concentration of either 2-propanol or hydroxide is increased, while increasing the concentration of hydroxide also causes a Nerstian shift in the peak potential to lower values. Experiments were carried out that indicate the high currents observed at low potentials are due to a rapid electro-oxidation of 2-propanol to acetone that proceeds through intermediates that are weakly adsorbed to the platinum surface. The electro-oxidation of acetone commences at potentials higher than the electro-oxidation of 2-propanol to acetone, and it proceeds through strongly adsorbed intermediates.
机译：在碱性电解液中进行了2-丙醇在粗糙的铂电极上的电位动力学和恒电位电氧化。在存在碱的情况下，在2-丙醇的恒电位电氧化过程中，低电位下会出现相当大的电流最大值。该电流最大值的大小随2-丙醇或氢氧化物浓度的增加而增加，而增加氢氧化物的浓度也会使峰值电势的Nerstian位移降低。进行的实验表明，在低电势下观察到的高电流是由于2-丙醇快速电氧化为丙酮，然后通过弱吸附到铂表面的中间体进行的。丙酮的电氧化开始于比2-丙醇电化为丙酮的电势高的电位，然后通过强烈吸附的中间体进行。

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