Abstract
High energy resolution fluorescence detection (HERFD) X‐ray adsorption spectroscopy (XAS) is demonstrated as a new tool to identify the geometry of metal adsorption sites and the orbitals involved in bonding. The type of CO adsorption site on a nanoparticular Pt‐Al2O3 catalyst is determined. The orbitals involved in the Pt — CO bonding are identified using theoretical FEFF8.0 calculations. In situ application of HERFD XAS is applicable to a large number of catalytic systems and will provide fundamental insights in structure — performance relationships.
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