The adsorption of molecular deuterium (D 2 ) onto charged cobalt-fullerene-complexes Co n C 60 + (n = 1-8) is measured experimentally in a few-collision reaction cell. The reactivity is strongly size-dependent, hinting at clustering of the transition metal atoms on the fullerenes. Formation and desorption rate constants are obtained from the pressure-dependent deuterogenation curves. DFT calculations indeed find that this transition metal clustering is energetically more favorable than decorating the fullerene. For n = 1, D 2 is predicted to bind molecularly and for n = 2 dissociative and molecular configurations are quasi-isoenergetic. For n = 3-8, dissociation of D 2 is thermodynamically preferred. However, reaching the ground state configuration with dissociated deuterium on the timescale of the experiment may be hindered by dissociation barriers.[a] Dr.
The interaction between carbon monoxide and metal-based catalysts is important in several reactions such as CO hydrogenation, CO oxidation, and CO2 reduction. Consequently, CO adsorption on metal surfaces and nanoparticles...
The adsorption and desorption kinetics of molecules is of significant fundamental and applied interest. In this paper, we present a new method to quantify the energy barriers for the adsorption...
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