Hydrogen-Induced Adsorption of Carbon Monoxide on the Gold Dimer Cation: A Joint Experimental and DFT Investigation
Marin Vojkovic1, Driss Rayane1, Rodolphe Antoine1
1Institut Lumière Matière, UMR 5306, Univ-Lyon, Université Claude Bernard Lyon 1, CNRS , F-69622 Villeurbanne, France.
Abstract:
It is demonstrated, using tandem mass spectrometry and radio frequency ion trap, that the adsorption of a H atom on the gold dimer cation, Au2H+, prevents its dissociation and allows for adsorption of CO. Reaction kinetics are measured by employing a radio frequency ion trap, where Au2+ and CO interact for a given reaction time. The effect of a hydrogen atom is evaluated by comparing reaction rate constants measured for Au2+ and Au2H+. The theoretical results for the adsorption of CO molecules and their reaction characteristics with Au2+ and Au2H+ are found to agree with the experimental findings. The joint investigations provide insights into hydrogen atom adsorption effects and consequent reaction mechanisms.
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