A photoelectron spectroscopic study of the effect of particle size on the adsorbed state of carbon monoxide over supported palladium catalysts |
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| Authors: | Y Takasu Y Matsuda I Toyoshima |
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| Institution: | Faculty of Engineering, Yamaguchi University, 2557 Tokiwadai, Ube 755, Japan;Research Institute for Catalysis, Hokkaido University, Sapporo 060, Japan |
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| Abstract: | UPS experiments on the adsorbed state of carbon monoxide over Pd/graphite model catalysts at 77–653 K have been performed. The CO-derived levels, (5σ + 1π) and 4σ, shift to higher with binding energy with decrease in the palladium particle size. Upon warming, the included levels on smaller Pd particles disappeared at much lower temperature than those on larger palladium particles. |
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