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In situ X-ray photoelectron spectroscopy (in situ XPS) was used to study the structural and catalytic properties of Pd–In near-surface intermetallic phases in correlation with previously studied PdZn and PdGa.Room temperature deposition of ∼4 monolayer equivalents (MLEs) of In metal on Pd foil and subsequent annealing to 453K in vacuum yields a ∼1:1 Pd/In near-surface multilayer intermetallic phase...
The CO 2 selectivity in methanol steam reforming was investigated for a “multilayer” PdZn 1:1 surface alloy (thickness of ∼1.3nm) and for a subsurface-Zn diluted “monolayer” Pd–Zn surface alloy, both exhibiting a 1:1 composition in the surface layer. Despite having almost the same surface layer stoichiometry, these two types of near-surface alloys exhibit different corrugations and electronic...
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