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Nerl, Hannah C. ; Plodinec, Milivoj ; Götsch, Thomas ; Skorupska, Katarzyna ; Schlögl, Robert ; Jones, Travis E. ; Lunkenbein, Thomas:
In Situ Formation of Platinum-Carbon Catalysts in Propane Dehydrogenation.
In: Angewandte Chemie International Edition.
Bd. 63
(2024)
Heft 24
.
- e202319887.
ISSN 1521-3773
DOI: https://doi.org/10.1002/anie.202319887
Abstract
The catalytic production of propylene via propane dehydrogenation (PDH) is a key reaction in the chemical industry. By combining operando transmission electron microscopy with density functional theory analysis, we show that the intercalation and ordering of carbon on Pt interstitials to form Pt-C solid solutions is relevant for increasing propylene production. More specifically, we found that at the point of enhanced propylene formation, the structure of platinum nanoparticles is transformed into a transient caesium chloride-type Pt-C polymorph. At more elevated temperatures, the zincblende and rock salt polymorphs seemingly coexist. When propylene production was highest, multiple crystal structures consisting of Pt and carbon were occasionally found to coexist in one individual nanoparticle, distorting the Pt lattice. Catalyst coking was detected at all stages of the reaction, but did initially not affect all particles. These findings could lead to the development of novel synthesis strategies towards tailoring highly efficient PDH catalysts.
Weitere Angaben
| Publikationsform: | Artikel in einer Zeitschrift |
|---|---|
| Begutachteter Beitrag: | Ja |
| Zusätzliche Informationen: | WOS:001217575500001 |
| 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: | 12 Jun 2025 09:02 |
| Letzte Änderung: | 12 Jun 2025 09:02 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/93660 |