Broken Symmetry of an Adsorbed Molecular Switch Determined by Scanning Tunneling Spectroscopy

Scanning tunneling spectroscopy has been used to analyze the structure of tris[4-(phenylazo)phenyl)]amine on a Au(111) surface. A degenerate marker state serves as a sensitive probe for the structure of the adsorbed molecules

Broken Symmetry of an Adsorbed Molecular Switch Determined by Scanning Tunneling Spectroscopy

Die Struktur von Tris[4-(phenylazo)phenyl)]amin auf einer Au(111)-Oberfläche wurde mit Rastertunnelspektroskopie untersucht. Ein entarteter Markerzustand dient als empfindliche Sonde für die Struktur der adsorbierten Moleküle

Preferential oxidation of CO on Ni/CeO2 catalysts in the presence of excess H-2 and CO2

Preferential oxidation of CO (CO-PROX) was carried out over Ni supported on CeO2 prepared by the co-precipitation method. The influence of metal loadings (2.5, 5 and 10 wt.% Ni) and the reaction conditions such as reaction temperature and feed composition on CO oxidation and oxidation selectivity were evaluated by using dry reformate gas. No other reactions like CO or CO2 methanation, coking, reverse water gas shift (RWGS) reaction is observed in the temperature range of 100–200 �C on these catalysts. Hydrogen oxidation dominates over CO oxidation above the temperature of 200 �C. An increase in oxygen leads to an increase in CO conversion but a simultaneous decrease in the O2 selectivity. It has been noticed that 5 and 10 % Ni/CeO2 show better catalytic activity towards CO-PROX reaction. These catalysts were characterized by SBET, XRD, TEM, XPS and H2-TPR

Growth Mechanism, Energetics and CO Affinities of Vanadium Doped Gold Clusters, AunV with n = 1−20

status: publishe