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Kinetics of the C2H2 dissociation on Ni(111): A HREELS study |
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| Authors: | Petra Rudolf Costanza Astaldi Silvio Modesti Renzo Rosei |
| Institution: | Laboratorio TASC, Area di Ricerca, Padriciano 99, 34012, Trieste, Italy a Laboratorio TASC, Area di Ricerca, Padriciano 99, 34012, Trieste, Italy b Dipartimento di Fisica, Università di Trieste, Via A. Valerio 2, 34127, Trieste, Italy |
| Abstract: | The C2H2 isothermal dissociation rate on Ni(111) was measured by following, with HREEL spectroscopy, the intensity of the CH stretching peak as a function of time. By repeating the experiment at several different temperatures we have obtained an activation energy of 1.2 ± 0.1 eV/molecule and a pre-exponential factor of 1014±1 s?1 for the first step of the C2H2 dissociation reaction. |
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