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• W1990233304 abstract "The adsorption and reaction of NH3 was studied on the Ru(112̄0) surface using high-resolution electron energy loss spectroscopy and thermal desorption spectroscopy. Following NH3 exposure at 85 K, annealing to 140 K leads to desorption of the multilayer and second layer leaving the NH3 monolayer which is characterized by two adsorption states: α1-NH3 at a 3-fold hollow site and a more weakly bonded α2-NH3 at an on-top site. As the temperature is increased, the α2-NH3 desorbs molecularly, while partial dehydrogenation occurs for the α1-NH3. This process proceeds at 3-fold hollow sites in successive steps finally leading to atomic nitrogen. The bonding competition effect accounts for the low N coverage of 0.11 ML obtained following NH3 exposure at 85 K and annealing. The activation barrier for associative desorption of nitrogen is estimated to be 120 ± 20 kJ/mol. At 300 K, the anticipated NH3 synthesis from successive hydrogenation of adsorbed N is observed." @default.
• W1990233304 created "2016-06-24" @default.
• W1990233304 creator A5050940474 @default.
• W1990233304 creator A5070382344 @default.
• W1990233304 date "2004-08-27" @default.
• W1990233304 modified "2023-09-27" @default.
• W1990233304 title "Adsorption and Reaction of Ammonia on the Ru(112̄0) Surface" @default.
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• W1990233304 doi "https://doi.org/10.1021/jp049496n" @default.
• W1990233304 hasPublicationYear "2004" @default.
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