COLL 358 |
| The interaction of metal discrete particles with oxide surfaces is important in environmental chemistry and catalysis, but the details of these interactions and how they are influenced by their chemical environment remain to be fully elucidated, in part because it is difficult experimentally to discern the presence of small molecules at metal particle surfaces. Molecular simulations provide a reliable framework for systematically examining the effect of environment on the nature and strength of metal particle-oxide interactions. If this work, we explore the effect of common environmental constituents, including water, oxygen, and hydrogen, on the interactions of early (Re) and late (Pd, Pt, Ag, and Au) metal atoms and clusters with magnesia and alumina surfaces. We find that the presence of metal-adsorbed atoms and molecules greatly influences the particle-oxide support interaction and the reactivity of the metal particle. |
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The Physical Chemistry of Environmental Interfaces
8:30 AM-12:40 PM, Wednesday, April 9, 2008 Morial Convention Center -- Rm. 225, Oral
Division of Colloid & Surface Chemistry |