Abstract
In molecular adsorption two kinds of precursor states are thought to occur [1]. An intrinsic precursor state refers to a weakly bound state of a molecule over a “clean” surface, while an extrinsic precursor state refers to weak adsorption on top of other adsorbates. Both kinds of precursor states are more mobile than chemisorbed states, and both can give rise to complex adsorption and desorption behavior. In this report, we focus on the intrinsic precursor state, presenting a simple molecular orbital analysis of precursor state potential wells and the activation barrier to chemisorption (see Fig. 1). Results of semi-empirical calculations for carbon monoxide adsorbing on nickel and other first row transition metals are described [2].
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M. Marino, W. Ermler, X.H. Feng and E.L. Garfunkel: to be published
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Garfunkel, E.L., Feng, Xh. (1987). A Molecular Orbital Analysis of Chemisorption Precursor States. In: Grunze, M., Kreuzer, H.J. (eds) Kinetics of Interface Reactions. Springer Series in Surface Sciences, vol 8. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-72675-0_15
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DOI: https://doi.org/10.1007/978-3-642-72675-0_15
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