bei Google ScholarTitelangaben
Frei, Elias ; Gaur, Abhijeet ; Lichtenberg, Henning ; Zwiener, Leon ; Scherzer, Michael ; Girgsdies, Frank ; Lunkenbein, Thomas ; Schlögl, Robert:
Cu-Zn Alloy Formation as Unfavored State for Efficient Methanol Catalysts.
In: ChemCatChem.
Bd. 12
(2020)
Heft 16
.
- S. 4029-4033.
ISSN 1867-3899
DOI: https://doi.org/10.1002/cctc.202000777
Abstract
The active sites of Cu/ZnO-based catalysts, commercially applied for the hydrogenation of CO(2)or CO2-rich synthesis gas, are still subject of current debates. Generally, the discussion is focused on the nature of the interfacial contact between Cu and ZnO, particularly whether it is rather of oxidic (Cu-ZnO) or alloying (Cu-Zn) character. We report on kinetic investigations on a Cu/ZnO : Al high performance catalyst activated at different temperatures. Incrementally increasing temperature under reductive conditions leads also to increased CuZn-alloy formation, analyzed byin-situX-ray diffraction,in-situX-ray absorption spectroscopy and high resolution transmission electron microscopy. The combination of the catalytic data and the complementary characterization techniques provide valuable insights on the relevant reaction sites for CH3OH formation. Our results highlight the complexity of the interfacial contact with evidence for Cu-ZnO reaction sites and clarify the negative impact of CuZn alloy formation on the nature of the active site.
Weitere Angaben
| Publikationsform: | Artikel in einer Zeitschrift |
|---|---|
| Begutachteter Beitrag: | Ja |
| Zusätzliche Informationen: | WOS:000541538100001 |
| Institutionen der Universität: | Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Chemie |
| Titel an der UBT entstanden: | Nein |
| Themengebiete aus DDC: | 500 Naturwissenschaften und Mathematik > 540 Chemie |
| Eingestellt am: | 13 Jun 2025 07:11 |
| Letzte Änderung: | 13 Jun 2025 07:11 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/93701 |