2000
Reorganization of adsorbed films by coadsorbing species
Publication
Publication
J. Chem. Phys. , Volume 113 p. 6376- 6381
The coadsorption of CO and butane on a Pt(533) stepped surface has been investigated using reflection absorption infrared spectroscopy (RAIRS) and temperature programmed desorption (TPD). The adsorption of butane on Pt(533) with CO preadsorbed on step-atop sites reveals that butane can force CO to tilt with a minimum angle of 42° away from the surface normal and displace CO from step-atop to step-bridge sites. The energy required for this tilting should be less than 20.5 kJ/mol. The coverage at which the compressed butane phase occurred was found to be the same at which this phase occurs on bare Pt(533). Together with the observed tilting and displacement of CO, this suggests that at low coverages butane adsorbs on the terraces, rotated 60° away from the step edge. The second monolayer phase then consists of tilted butane molecules
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| doi.org/10.1063/1.1309529 | |
| J. Chem. Phys. | |
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Roke, S., Coquel, J. M., & Kleyn, A. W. (2000). Reorganization of adsorbed films by coadsorbing species. J. Chem. Phys., 113, 6376–6381. doi:10.1063/1.1309529 |
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