Abstract
Pd was deposited from a filament onto an α-Al2O3 single-crystal. The Pd 3dP 5/2 binding energy change versus deposition time was used as a calibration of the Pd clusters size. The experiment was then reproduced on γ — Al2O3. The Pd 3d 5/2 binding energy showed that the clusters growth mechanism was now different. Thermal treatments produced a dispersion of the metal or a clusters size increase depending on the temperature or the nature of the support. Oxygen exposure dispersed Pd in every case. A mechanism is proposed to interpret this phenomenon.
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Légaré, P., Finck, F., Roche, R., Maire, G. (1989). Palladium particles growth on various aluminas. In: Chapon, C., Gillet, M.F., Henry, C.R. (eds) Small Particles and Inorganic Clusters. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-74913-1_5
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DOI: https://doi.org/10.1007/978-3-642-74913-1_5
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