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Issue 43, 2009
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Interactions between co-adsorbed CO and H on a Rh(100) single crystal surface

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Abstract

Co-adsorption of CO and H2 on a Rh(100) single crystal surface has been studied by a combination of temperature programmed desorption (TPD), reflection absorption infrared spectroscopy (RAIRS), low energy electron diffraction (LEED), and density functional theory (DFT) calculations. Exposure of CO to a hydrogen precovered surfaces at 150 K results in some displacement of adsorbed hydrogen and a layer with 0.67 ML H and 0.67 ML CO is obtained. A c(3√2 ×√2)R45° structure is formed with CO occupying bridge sites and hydrogen occupying partly bridge sites on the surface and partly octahedral subsurface sites, causing hydrogen to desorb at temperatures around 230 K.

Graphical abstract: Interactions between co-adsorbed CO and H on a Rh(100) single crystal surface

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Article information


Submitted
28 May 2009
Accepted
20 Aug 2009
First published
08 Sep 2009

Phys. Chem. Chem. Phys., 2009,11, 10009-10016
Article type
Paper

Interactions between co-adsorbed CO and H on a Rh(100) single crystal surface

M. M. M. Jansen, J. Gracia, B. E. Nieuwenhuys and (. J. W. Niemantsverdriet, Phys. Chem. Chem. Phys., 2009, 11, 10009
DOI: 10.1039/B910497F

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