Pd1/MgO(1 0 0): a model system in nanocatalysis

Nanocatalysts consist of small size-selected clusters adsorbed on uniform sites of a support material. Here, we focus on a simple model system, which is fabricated by soft-landing at. Pd ions on oxygen vacancies (F-centers) of a MgO(1 0 0) surface (Pd1/MgO(Fs)). We used thermal desorption and IR spectroscopies (TDS, FTIR) to study the acetylene polymn. and the CO oxidn. catalyzed by this system. In one-heating-cycle expts., only the formation of benzene is obsd. during the polymn. reaction and the combustion of CO leads to the formation of CO2 detected at 260 and 500 K. Exptl. results in combination with ab initio calcns. reveal the mechanisms of these reactions and demonstrate the role of surface defects in nanocatalysis. [on SciFinder(R)]     «

Nanocatalysts consist of small size-selected clusters adsorbed on uniform sites of a support material. Here, we focus on a simple model system, which is fabricated by soft-landing at. Pd ions on oxygen vacancies (F-centers) of a MgO(1 0 0) surface (Pd1/MgO(Fs)). We used thermal desorption and IR spectroscopies (TDS, FTIR) to study the acetylene polymn. and the CO oxidn. catalyzed by this system. In one-heating-cycle expts., only the formation of benzene is obsd. during the polymn. reaction and t...     »

CAN 137:206954 67-1 Catalysis, Reaction Kinetics, and Inorganic Reaction Mechanisms Institut de Physique de la Matiere Condensee, Universite de Lausanne, Lausanne, Switz. Journal 0039-6028 1309-48-4 (Magnesia); 7440-05-3 (Palladium) Role: CAT (Catalyst use), PRP (Properties), USES (Uses) (Pd1/MgO(1 0 0) as model system in nanocatalysis); 630-08-0 (Carbon monoxide) Role: RCT (Reactant), RACT (Reactant or reagent) (oxidn. of; Pd1/MgO(1 0 0) as model system in nanocatalysis); 74-86-2 (Acetylene) Role: RCT (Reactant), RACT (Reactant or reagent) (polymn. of; Pd1/MgO(1 0 0) as model system in nanocatalysis)     «

CAN 137:206954 67-1 Catalysis, Reaction Kinetics, and Inorganic Reaction Mechanisms Institut de Physique de la Matiere Condensee, Universite de Lausanne, Lausanne, Switz. Journal 0039-6028 1309-48-4 (Magnesia); 7440-05-3 (Palladium) Role: CAT (Catalyst use), PRP (Properties), USES (Uses) (Pd1/MgO(1 0 0) as model system in nanocatalysis); 630-08-0 (Carbon monoxide) Role: RCT (Reactant), RACT (Reactant or reagent) (oxidn. of; Pd1/MgO(1 0 0) as model system in nanocatalysis); 74-86-2 (Acetylene...     »