丙三醇在Pt电极上吸附和氧化过程的原位FTIR反射光谱研究

运用电化学循环伏安(CV)和原位FTIR反射光谱方法, 研究了丙三醇在Pt电极上的氧化过程。结果指出, 丙三醇的氧化是一个复杂的表面过程。其间包括脱水、吸附、解离等步骤。根据CV和红外实验数据, 本文提出了Pt电极上丙三醇解离吸附的表面反应机理和不同电位下丙三醇氧化的分子过程。

Adsorption and oxidation of glycerol on platinum electrodes investigated by in situ FTIR spectroscopy

The adsorption and oxidation of glycerol on Pt electrodes were investigated by cyclic voltammetry (CV) and in situ FTIR spectroscopy. The results demonstrated that the oxidation of glycerol at a Pt electrode is a complex process of surface, including dehydrogenation, adsorption and dissociation stages. Based on the data acquired from CV and in situ FTIR experiments, the present paper proposed a surface reaction mechanism for glycerol dissociative adsorption, and described reaction procedures at a mol. level of the oxidation of glycerol at different potentials.