Size Dependent Reaction Kinetics on Supported Model Catalysts:  A Molecular Beam/IRAS Study of the CO Oxidation on Alumina-Supported Pd Particles

2001 ◽  
Vol 105 (17) ◽  
pp. 3567-3576 ◽  
Author(s):  
I. Meusel ◽  
J. Hoffmann ◽  
J. Hartmann ◽  
J. Libuda ◽  
H.-J. Freund
Keyword(s):  
Co Oxidation ◽  
Reaction Kinetics ◽  
Molecular Beam ◽  
Model Catalysts ◽  
Size Dependent ◽  
Supported Pd

Nanoassembled Model Catalysts: Changing Efficiency and Selectivity Atom-by-Atom

2000 ◽  
Vol 648 ◽  
Author(s):  
U. Heiz ◽  
S. Abbet ◽  
H. Häkkinen ◽  
U. Landman
Keyword(s):  
High Selectivity ◽  
Bulk Material ◽  
Gold Cluster ◽  
Chemical Properties ◽  
Model Catalysts ◽  
Size Dependent ◽  
Phase Cluster ◽  
Physical And Chemical ◽  
Supported Pd ◽  
And Chemical Properties

AbstractCluster-assembled materials open fascinating new routes for tuning physical and chemical properties by changing cluster size and often these materials behave completely differently than their bulk analogues. By depositing gas phase cluster cations on various surfaces, cluster model catalysts are fabricated, which exhibit remarkable catalytic activity. While inert as bulk material, gold cluster catalysts oxidize carbon monoxide with Au8 to be the smallest active size. In contrast to the high selectivity of Pd(111) surfaces for the cyclotrimerization of acetylene, small supported Pdn clusters reveal a strongly size-dependent selectivity for the polymerization of acetylene and catalyze the cyclotrimerization as well as the hydrogenation of the formed intermediate C4H4.

Molecular beam studies of CO oxidation and CO-NO reactions on a supported Pd catalyst

1994 ◽  
Vol 307-309 ◽  
pp. 193-198 ◽  
Author(s):  
M. Valden ◽  
J. Aaltonen ◽  
E. Kuusisto ◽  
M. Pessa ◽  
C.J. Barnes
Keyword(s):  
Co Oxidation ◽  
Molecular Beam ◽  
Pd Catalyst ◽  
Supported Pd
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