TY  - JOUR
AB  - Using a hexapole technique, a beam of gas phase oriented and state selected NO molecules is directed onto a CO precovered Pt(100) surface. Two quadrupole mass analyzers behind the platinum target record the yield of NO and CO2 molecules leaving the surface. The platinum single crystal acts like a catalyst and the CO2 reaction signal strongly depends on the initial NO orientation, that is to say preferential N- or O-end collisions perpendicular to the surface. At first the orientation asymmetry of the CO2 signal, defined positive for a higher N-end collision signal, has a positive initial value of 0.30, 0.16 and 0.07 for substrate temperatures of Ts = 120 Ts = 130 and Ts = 140°C, respectively. The dependence of the reaction and of the sticking on the initial NO orientation leads to a transition from Eley-Rideal/Harris-Kasemo to Langmuir-Hinshelwood reaction.
DA  - 1994
DO  - 10.1016/0039-6028(94)90387-5
LA  - eng
IS  - 1
M2  - 159
PY  - 1994
SN  - 0039-6028
SP  - 159-164
T2  - Surface Science
TI  - Orientation dependent CO2 production by exposing a CO precovered Pt(100) surface to gas phase oriented NO
UR  - https://nbn-resolving.org/urn:nbn:de:0070-pub-17758162
Y2  - 2024-11-22T04:57:29
ER  -