Nanoclusters open fascinating opportunities for quantum engineering because quantum-size effects become dominant in detg. catalytic, optical, electronic, and magnetic properties. We succeeded in the controlled prodn. of low-energy and high-flux monodispersed cluster beams, which allow for a systematic study of their reactivity after deposition onto a chem. inert substrate. We investigated the catalytic reaction that is the oxidn. of CO on platinum and obsd. a distinct atom by atom size dependency for monodispersed platinum clusters on thin MgO(100) films. These results clearly show that the efficiency of a heterogeneous catalytic reaction can be tuned by the judicious choice of particle size. [on SciFinder(R)]     «

Nanoclusters open fascinating opportunities for quantum engineering because quantum-size effects become dominant in detg. catalytic, optical, electronic, and magnetic properties. We succeeded in the controlled prodn. of low-energy and high-flux monodispersed cluster beams, which allow for a systematic study of their reactivity after deposition onto a chem. inert substrate. We investigated the catalytic reaction that is the oxidn. of CO on platinum and obsd. a distinct atom by atom size dependenc...     »

CAN 130:228308 67-2 Catalysis, Reaction Kinetics, and Inorganic Reaction Mechanisms Institut de Physique de la Matiere Condensee, Universite de Lausanne, Lausanne, Switz. Journal 0002-7863 7440-06-4D (Platinum) Role: CAT (Catalyst use), PRP (Properties), USES (Uses) (catalytic oxidn. of carbon monoxide on monodispersed platinum clusters where each atom counts); 630-08-0 (Carbon monoxide) Role: RCT (Reactant), RACT (Reactant or reagent) (catalytic oxidn. of carbon monoxide on monodispersed platinum clusters where each atom counts)     «

CAN 130:228308 67-2 Catalysis, Reaction Kinetics, and Inorganic Reaction Mechanisms Institut de Physique de la Matiere Condensee, Universite de Lausanne, Lausanne, Switz. Journal 0002-7863 7440-06-4D (Platinum) Role: CAT (Catalyst use), PRP (Properties), USES (Uses) (catalytic oxidn. of carbon monoxide on monodispersed platinum clusters where each atom counts); 630-08-0 (Carbon monoxide) Role: RCT (Reactant), RACT (Reactant or reagent) (catalytic oxidn. of carbon monoxide on monodispersed plati...     »