par Barroo, Cédric 
;De Decker, Yannick ;Devred, François ;Visart de Bocarmé, Thierry ;Kruse, Norbert
Référence Europoean Congress on Catalysis (Europacat) (11: 2013-09-01->06: Lyon, France)
Publication Non publié, 2013-09-01
;De Decker, Yannick ;Devred, François ;Visart de Bocarmé, Thierry ;Kruse, Norbert Référence Europoean Congress on Catalysis (Europacat) (11: 2013-09-01->06: Lyon, France)
Publication Non publié, 2013-09-01
Poster de conférence
| Résumé : | The dynamics of NO2 reduction over Pt metal is studied by means of real-time Field Emission Microscopy (FEM). The extremity of a nanosized Pt tip acts as a catalyst grain. FEM provides nanoscale lateral resolution. Dynamic imaging is based on monitoring local brightness changes due to adsorbate-induced variations of the local work function. Several non-linear behaviors of varying complexity are observed, from hysteresis to periodic oscillations. A mechanism for the observed kinetic oscillations is finally proposed. |
