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Inside Cover: Reducing the Cost and Preserving the Reactivity in Noble‐Metal‐Based Catalysts: Oxidation of CO by Pt and Al–Pt Alloy Clusters Supported on Graphene (Chem. Eur. J. 15/2016)
Author(s) -
Koizumi Kenichi,
Nobusada Katsuyuki,
Boero Mauro
Publication year - 2016
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201600711
Subject(s) - graphene , catalysis , noble metal , cluster (spacecraft) , reactivity (psychology) , adsorption , electron transfer , alloy , molecule , materials science , metal , chemistry , chemical physics , nanotechnology , photochemistry , organic chemistry , metallurgy , medicine , alternative medicine , pathology , computer science , programming language
Reactive dynamical simulations elucidate the catalytic oxidation of CO to CO 2 on graphene‐supported Pt and Pt–Al alloy clusters. The general mechanism evidenced is a Langmuir–Hinshelwood pathway. The graphene support transfers electrons to the clusters, which, in turn, promotes a subsequent charge transfer from the clusters to the adsorbed O 2 molecule. This O 2 molecule dissociates on the cluster surface and the atomic O reacts with an approaching CO producing CO 2 . Moreover, Al doping in a pure Pt cluster is shown to be a viable way to reduce costs without hindering the catalytic activity. More information can be found in the Full Paper by K. Nobusada et al. on page 5181 ff.