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- W1996156910 abstract "Methanol was adsorbed on Rh (1 1 1) at 90 K. With increasing methanol exposure first a mono-layer, a second layer and then multi-layers of methanol are formed at this surface temperature. During methanol desorption between 110 and 205 K about 50% of the adsorbed methanol undergoes a dehydrogenation reaction to form hydrogen and carbon monoxide adsorbed on the surface. These reaction products desorb at 300 and 480 K, respectively. Experiments using a rhodium–vanadium subsurface alloy were also performed. This alloy has the same first atomic layer geometry as clean Rh (1 1 1), but the electronic properties are different due to a downshift in the d-band after alloying with vanadium. The differences in the desorption spectra from the clean Rh (1 1 1) surface and from the Rh/V surface alloy are presented. The initial sticking coefficient and the initial reaction probability were measured as a function of surface temperature and molecular beam energy. On the clean surface methanol adsorption and dissociation ceases above 198 K, whereas on the alloy surface adsorption and subsequent reaction occurs up to 473 K. The sticking coefficient decreases with increasing energy of the molecular beam on the alloy surface, indicating a molecular precursor." @default.
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- W1996156910 date "2003-05-01" @default.
- W1996156910 modified "2023-10-03" @default.
- W1996156910 title "The influence of the translational energy of methanol during adsorption on Rh (111) and on a rhodium/vanadium surface alloy" @default.
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- W1996156910 doi "https://doi.org/10.1016/s0042-207x(02)00719-4" @default.
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