Elucidation of the atomic-scale processes of dissociative adsorption and spillover of hydrogen on the single atom alloy catalyst Pd/Cu(111)
Wataru Osada, S. Tanaka, Kozo Mukai, Mitsuaki Kawamura, Young-Hyun Choi, Fumihiko Ozaki, Taisuke Ozaki, Jun Yoshinobu
Abstract
binding energy was observed, indicating two types of hydrogen adsorption states at the Pd site. The proposed mechanism of the hydrogen dissociation and spillover processes is as follows: (i) a hydrogen molecule is dissociated at a Pd site, and the hydrogen atoms are adsorbed on the Pd site; (ii) the number of hydrogen atoms on the Pd site increases up to three; and (iii) the hydrogen atoms will spill over onto the Cu surface.
Topics & Concepts
CatalysisX-ray photoelectron spectroscopyHydrogenHydrogen spilloverAdsorptionHydrogen atomDissociation (chemistry)Atomic unitsChemistryAlloyAtom (system on chip)Inorganic chemistryMaterials sciencePhysical chemistryChemical engineeringOrganic chemistryAlkylPhysicsComputer scienceEngineeringQuantum mechanicsEmbedded systemAdvanced Chemical Physics StudiesCatalytic Processes in Materials Sciencenanoparticles nucleation surface interactions