| Abstract
| - Chlorine effectively improves the selectivity of catalytic partial oxidation reactions on Au(111). Here, scanningtunneling microscopy was used to visualize the dispersal and redistribution of Au islands stabilized by oxygenon the surface. The dispersal of Au islands also prevents the ordering of oxygen on the surface at roomtemperature. This dynamic interaction stems from the through-metal nature, for example, incorporation ofgold atoms in the adsorbates. The change of oxygen spatial organization is used to explain one of the majormechanisms for chlorine promotion of olefin oxidation by Au.
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