Monodispersed platinum nanoparticles in the 1-10 nm range show that product selectivity changes as a funciton of particle size and shape.  The turnover rate of covalent bond-breaking and rearrangements depends on the metal surface area.  The oxide-metal interfaces produce hot electron flow during catalytic reactions, the charge produces acid-base catalysis and the reaction depends on the charge concentration.  THe product distributions in the reactions with the two different mechanisms are widely different.  The catalysts were characterized under reaction conditions by a variety of laser- and synchrotron x-ray spectroscopy-based techniques.  The hydrocarbon conversion reactions included carbonylation and hydrogenation reactions.  CO and hydrogen oxidation were also carried out on oxide-metal interfaces and platinum surfaces.

Catalytic hydrocarbon conversion by platinum monodisperse nanoparticles and oxide platinum interfaces: Comparison of covalent bond and acid-base catalysis for the same reaction systems

245th National Meeting (2013)

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