Many important catalysts and electro-catalysts for energy and environmental technologies involve late transition metal nanoparticles dispersed across the surface of some support material.  The activity and long-term stability of these materials depend sensitively on particle size below 5 nm, and, in this size range, upon the support material.  The relationships between the energetic stability of late transition metal particles on oxide supports and their structural, electronic, chemisorption and catalytic properties have been examined in detail.  We will show predictive correlations amongst the energy of the metal atoms in these nanoparticles (i.e., the metal-atom chemical potential) and their particle size as well as the nature of the support surface.  The strength with which they bond adsorbates, their catalytic kinetics and their sintering rates also correlate with this metal-atom chemical potential, and thus helps explain particle size and support effects in catalysis.<br/>  Work supported by DOE-OBES Chemical Sciences Division.

Supported metal nanoparticle catalysts:  Predicting how size and support effect metal atom energetics and thus catalytic performance

254th National Meeting (2017)

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