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Based on density functional theory calculations of H 2 dissociation on Al(111), Cu(111), Pt(111) and Cu 3 Pt(111) we present a consistent picture of some key physical properties determining the reactivity of metal and alloy surfaces. The four metal surfaces are chosen to represent metals with no d-bands, with filled d-bands and with d-states at the Fermi level. We show that electronic...
The dynamics of dissociative hydrogen adsorption on the W(100)-c(2 2)Cu surface have been studied with a supersonic molecular beam. The surface is observed to present a higher barrier to direct dissociation than W(100) where this channel is non-activated. The removal of the direct channel at low energies reveals a pure indirect channel, allowing for the first time the study of an isolated indirect...
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