首页|A high-resolution X-ray photoelectron spectroscopy study on the adsorption and reaction of ethylene on Rh(111)

A high-resolution X-ray photoelectron spectroscopy study on the adsorption and reaction of ethylene on Rh(111)

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  • NSTL
  • Elsevier
The adsorption and thermal evolution of ethylene on Rh(1 1 1) were investigated by state-of-the-art surface science techniques. Synchrotron radiation-based high-resolution X-ray photoelectron spectroscopy (XPS) and temperature-programmed XPS allowed for the examination of the adsorption process and the reaction pathway of ethylene on Rh(1 1 1). At 140 K, ethylene adsorbs molecularly in a symmetrical geometry. The reaction intermediates formed upon heating were identified by the vibrational fine structure of XPS. At approximately 200 K, ethylidyne emerges, as expected from literature. Above 350 K, we observe the evolution of methylidyne. Simultaneously, decomposition to carbides sets in, which is completed at ~ 460 K.

Unsaturated hydrocarbonsEthyleneEthylidyneMethylidyneRhodiumCokingVibrational fine structureHigh-resolution X-ray photoelectronspectroscopyVIBRATIONAL FINE-STRUCTURECARBON-MONOXIDEETHYLIDYNE FORMATIONSURFACE-REACTIONSDEHYDROGENATIONDECOMPOSITIONGRAPHENEPHOTOEMISSIONOXIDATIONSPECTRA

Freiberger, Eva Marie、Steinrueck, Hans-Peter、Papp, Christian、Duell, Fabian、Wichmann, Christoph、Bauer, Udo

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Friedrich Alexander Univ Erlangen Nurnberg

2022

10.1016/j.cplett.2022.139595

Chemical Physics Letters

Chemical Physics Letters

EISCI
ISSN：0009-2614
年,卷(期)：2022.797
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