Model Catalyst Ruthenium Dioxide
Investigation of reaction dynamics, kinetics and structural properties of heterogeneous metal oxide catalysts
We focus our interest on an atomistic understanding of mechanisms that control the reactivity at transition metal surfaces and the corresponding oxide surfaces, and how the reactivity is related to the actual surface structure and its electronic properties. Over the past three years we investigated in detail the oxidation of Ru(0001) which results in the formation of an ultra thin RuO2(110) film. This RuO2(110) film is catalytically very active and serves as a promising oxidation catalyst in the partial dehydrogenation of hydro-carbons and other simple oxidation reactions.
| [1] | H. Over, Y.D. Kim, A.P. Seitsonen, S. Wendt, E. Lundgren, M. Schmid. P. Varga, A. Morgante, and G. Ertl, Structure and catalytic reactivity on atom scale of an oxide surface: RuO2(110). Science 287, 1474 (2000). |
| [2] | H. Over, A.P. Seitsonen, E. Lundgren, M. Schmid, and P. Varga, Direct imaging of catalytically important processes in the oxidation of CO over RuO2(110). J. Am. Chem. Soc. 123, 11807 Communication to the Editor. (2001) |
| [3] | H. Over and A.P. Seitsonen, Oxidation of Metal Surfaces, Science 297, 2003 (2002). |
| [4] | H. Over and M. Muhler, Catalytic CO Oxidation over ruthenium-bridging the pressure gap, Highlights in Prog. Surf. Sci. 72, 3-17 (2003). |
| [5] | S. Wendt, M. Knapp, and H. Over, The role of weakly bound on-top oxygen in the catalytic CO oxidation over RuO (110), J. Am. Chem. Soc. (in press). |