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Öztuna, Eylül ; Götsch, Thomas ; Cruz, Daniel ; Zeller, Patrick ; Vinogradova, Olga V. ; Li, Zehua ; Rohner, Christian ; Schmidt, Franz-Philipp ; Gheisari, Zahra ; Steigert, Alexander ; Muske, Martin ; Hävecker, Michael ; Stotz, Eugen ; Antonyshyn, Iryna ; Girgsdies, Frank ; Timpe, Olaf ; Lunkenbein, Thomas ; Bukas, Vanessa J. ; Reuter, Karsten ; Schlögl, Robert ; Skorupska, Katarzyna ; Knop-Gericke, Axel ; Roldán Cuenya, Beatriz:
Operando X-ray Spectroscopy Study of Pd and Pd-Au Laterally Condensed Catalysts during Selective Acetylene Hydrogenation : The Role of Carbon.
In: Advanced Materials.
Bd. 38
(2026)
Heft 11
.
- e17227.
ISSN 1521-4095
DOI: https://doi.org/10.1002/adma.202517227
Angaben zu Projekten
| Projekttitel: |
Offizieller Projekttitel Projekt-ID EXC 2089: e-conversion 390776260 |
|---|---|
| Projektfinanzierung: |
Deutsche Forschungsgemeinschaft |
Abstract
In this study, near ambient pressure X-ray photoelectron and X-ray absorption spectroscopy (NAP-XPS and NAP-XAS) were performed during the selective acetylene hydrogenation reaction on Pd and Pd-Au laterally condensed catalysts. The activity and selectivity of this reaction are strongly influenced by the incorporation of carbon into the Pd and Pd–Au lattice, which is investigated by both experiment and theory. We find that Pd can take up much more carbon than Pd-Au, which can be used to tune the activity of the catalyst during the hydrogenation reactions. The amount of the carbonaceous species dissolved in the Pd and Pd–Au lattice was quantified and their effect on the chemical and the electronic structure was tracked by means of operando spectroscopy throughout different stages of the acetylene hydrogenation reaction.