title: Cluster, facets, and edges: site-dependent selective chemistry on model catalysts.
abstract: More than activity, selectivity of catalytic reactions is the focus of research in the 21(st) century. We review studies on model systems that address the issue of directing a catalytic reaction on disperse metal catalysts by controlling the specific surface site. Three examples are explored: methanol dehydrogenation over Pd/alumina, NO dissociation on Pd/alumina, and reaction studies for molecules relevant in a Fischer-Tropsch scenario on a bimetallic Pd/Co/alumina model catalyst. We show how surface science can be used by combining a variety of experimental techniques to study the chemistry of model catalysts at the atomic level.
authors.affiliation: Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, D-14195 Berlin, Germany. freund@fhi-berlin.mpg.de
authors.forename: H-J
authors.initials: HJ
authors.lastname: Freund
authors.forename: J
authors.initials: J
authors.lastname: Libuda
authors.forename: M
authors.initials: M
authors.lastname: Bäumer
authors.forename: T
authors.initials: T
authors.lastname: Risse
authors.forename: A
authors.initials: A
authors.lastname: Carlsson