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Molecular Beams and Model Catalysis: Activity and Selectivity of Specific Reaction Centers on Supported Nanoparticles
Author(s) -
Libuda Jörg
Publication year - 2004
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.200400049
Subject(s) - catalysis , selectivity , nanoparticle , nanometre , kinetics , nanotechnology , chemical kinetics , heterogeneous catalysis , chemistry , materials science , nanoscopic scale , chemical engineering , chemical physics , combinatorial chemistry , organic chemistry , physics , quantum mechanics , engineering , composite material
Abstract Reaction kinetics on nanometer‐scale particles are different from those on extended surfaces of bulk materials. This fact has been utilized for a long time to empirically maximize the performance of heterogeneous catalysts, but the understanding of the underlying effects is poor at the microscopic level. Modern molecular‐beam‐based methods, however, allow us to derive very detailed kinetic information on catalytically active surfaces. In combination with structurally highly controlled model catalysts, microscopic insights into the activity and selectivity of specific reaction centers on catalyst nanoparticles can be obtained. This combined approach is illustrated through simple model reactions.