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High-resolution electron energy loss spectroscopy (HREELS) is employed to detect the formation of benzene following acetylene adsorption on the Pd(111) surface. At low exposures (0.25 L) the resulting spectra at 253 K are due to ethylidyne formation, but at higher exposures the presence of low coverages of benzene are indicated by the appearance of the strong benzene ν 4 (720 cm - ...
Anomalous effects such as the enhanced sticking probability of CO and O 2 and the partial CO dissociation were measured on small Pd particles deposited on γ-alumina. Recently, a dependence of the sticking coefficient on the substrate has also been reported on Pd/(0001) α-alumina but no dissociation has been observed in this case. We present a detail study of CO adsorption/desorption and...
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