KF42 Consequences of Cluster Size and Surface Coordination in Catalysis: Structure Sensitivity and Brønsted-Evans-Polanyi Relations Revisited

Wednesday, June 8, 2011: 2:10 PM
Ambassador Ballroom 3 (Detroit Marriott Hotel at the Renaissance Center )
Enrique Iglesia, Department of Chemical Engineering, University of California Berkeley, Berkeley, CA


The surface reactivity of small clusters change markedly with size, because the fraction of surface atoms with low coordination, which bind molecules more strongly, increases with decreasing cluster size. These trends lead to catalytic consequences that depend on the kinetically-relevant steps and most abundant intermediates and can be understood using thermodynamic guidance from linear free energy relations.

Extended Abstracts: