Abstract
In this work, we study the reaction of the dissociation products of carbon dioxide on a Ru(0 0 0 1) surface under Extreme Ultraviolet (EUV) light with a partial pressure of hydrogen. Our results show that both amorphous carbon and H2O are the end products of the CO2 dissociation at the Ru surface, and these are produced only in the presence EUV and H2. Partial dissociation of CO2 on the Ru surface is an intermediate step in the overall reaction. Using Reflection Absorption Infrared spectroscopy (RAIRS) and Temperature Programmed Desorption (TPD), only water is detected as molecular reaction product. We further show that this reaction deactivates the Ru surface due to the formation of an amorphous carbon layer, thereby confirming the catalytic role of Ru in the total reaction.
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