Hydrogen-Induced Adsorption of Carbon Monoxide on the Gold Dimer Cation: A Joint Experimental and DFT Investigation
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 the dissociation of gold dimer cation 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 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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