Quantitative adsorbate structure determination under catalytic reaction conditions

Article

关键词: RAY PHOTOELECTRON-SPECTROSCOPY;    PRESSURE METHANOL OXIDATION;    IN-SITU;    STATIONARY CONDITIONS;    CU(110) SURFACES;    INFRARED SPECTRA;    DIFFRACTION;    FORMATE;    ADSORPTION;    INTERFACES;   

DOI  :  10.1103/PhysRevB.87.125420

来源: SCIE

【 摘 要 】

Current methods allow quantitative local structure determination of adsorbate geometries on surfaces in ultrahigh vacuum (UHV) but are incompatible with the higher pressures required for a steady-state catalytic reactions. Here we show that photoelectron diffraction can be used to determine the structure of the methoxy and formate reaction intermediates during the steady-state oxidation of methanol over Cu(110) by taking advantage of recent instrumental developments to allow near-ambient pressure x-ray photoelectron spectroscopy. The local methoxy site differs from that under static UHV conditions, attributed to the increased surface mobility and dynamic nature of the surface under reaction conditions. DOI: 10.1103/PhysRevB.87.125420

【 授权许可】

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