Abstract
Iron pentacarbonyl desorbs from Pd(111) in ultra-high vacuum at 153 and 170 K, corresponding to multilayer and monolayer desorption. Approximately 30% of the first saturation layer decomposes during the temperature-programmed desorption (TPD) experiment. Laser-induced thermal desorption shows submonolayer coverages to react under 150 K and then again near 200 K. TPD shows evolution of CO by a reaction-limited process near 260 K. The decomposition process is likely to involve a stepwise decarbonylation.
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