Engineering metals and alloys at the nanoscale constitutes an increasingly-important pathway for the design of catalysts in a wide range of catalytic reactions.  A key challenge is the ability to control and tune the surface catalytic sites.  This presentation describes recent findings in probing the surface sites of metal and alloy nanoparticles in catalytic oxidation reactions of different molecules in the gas phase (e.g., CO, propane, toluene, etc.).  In-situ techniques such as diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) and in-situ synchrotron high-energy XRD coupled to pair distribution function (HEXRD/PDF) analysis, were employed to probe the atomic-scale surface sites and phase properties of noble metal and low-noble-metal content alloy nanoparticles on different metal oxide supports in the catalytic reactions.  The catalytic properties depend strongly on the nano-engineering parameters.  Implications for the design and preparation of active and robust nanocatalysts for sustainable energy and clean environmental reactions will also be discussed.<br/>

Probing surface sites on metal/alloy nanocatalysts in gas-phase catalytic oxidation reactions

2019 Fall National Meeting

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