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The primary reason why the RuO 2 (110) surface is much more active in the oxidation of CO than the corresponding metal Ru(0001) surface is correlated with the weaker oxygen bonding on RuO 2 (110) compared to chemisorbed oxygen on Ru(0001). The RuO 2 (110) surface stabilizes at least two potentially active oxygen species, i.e., bridging O and on-top O atoms. Together with various...
We have studied structural, electronic and energetical aspects of ordered overlayers which were prepared by depositing Cs and CO on the (2x2)-O-precovered Ru(0001) surface. This ternary system may serve as a model system to study the Cs promoted CO oxidation reaction over Ru(0001). The electronic properties of the Cs subsystem, in particular the delocalized character of the Cs-6<space>s state,...
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