Chapter

Model Systems in Catalysis

pp 345-365

Date:

Catalysis by Supported Size-Selected Clusters

  • Randall MeyerAffiliated withDepartment of Chemical Engineering, University of Illinois at Chicago Email author 
  • , Yu LeiAffiliated withDepartment of Chemical Engineering, University of Illinois at ChicagoArgonne National Laboratory, Chemical Sciences and Engineering Division
  • , Sungsik LeeAffiliated withArgonne National Laboratory, Chemical Sciences and Engineering Division
  • , Stefan VajdaAffiliated withArgonne National Laboratory, Chemical Sciences and Engineering DivisionArgonne National Laboratory, Center for Nanoscale MaterialsDepartment of Chemical Engineering, Yale University

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Abstract

The use of size-selected metal clusters as model catalysts opens up many exciting new possibilities for the study of size-dependent catalysis. By supporting these size-selected clusters on planar thin-film or single-crystal metal oxide substrates, a variety of analysis techniques can be employed to examine them in detail in an effort to understand how and why these clusters exhibit unique reactivity. In this review, we focus on examples involving CO oxidation by gold clusters, NO reduction and the cycloisomerization of acetylene with Pd clusters, and hydrazine decomposition over Ir clusters. We conclude with some thoughts about in situ reaction probes and the potential of atom-by-atom design of bimetallic clusters with regard to size and composition.