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Masliuk, Liudmyla ; Swoboda, Manfred ; Algara-Siller, Gerardo ; Schlögl, Robert ; Lunkenbein, Thomas:
A quasi in situ TEM grid reactor for decoupling catalytic gas phase reactions and analysis.
In: Ultramicroscopy.
Bd. 195
(2018)
.
- S. 121-128.
ISSN 0304-3991
DOI: https://doi.org/10.1016/j.ultramic.2018.09.001
Abstract
We present a versatile grid reactor setup for transmission electron microscopy (TEM), which is able to track catalytic conversion on TEM amounts of sample. It is based on the concept of decoupling catalytic gas-phase reactions from the structural analysis of identical particles before and after reaction. The system has superior properties in terms of image resolution and long-term measurements compared to conventional in situ TEM analysis. Monitoring catalytic conversions on a TEM grid is enabled by proton-transfer reaction mass spectrometry. In addition, identical location imaging benefits from a secure transfer of the sample between TEM and the reactor system by vacuum transfer holders. Using N and Cu/ZnO/Al2O3 as an example we show that structural changes of identical particles or areas of a N foil before and after reactive experiments can be tracked. During catalytic testing the samples are exposed to homogeneous reaction conditions. The concept minimizes electron-sample and electron-atmosphere interactions and can prospectively be considered as complementary tool to in situ TEM analysis.
Weitere Angaben
| Publikationsform: | Artikel in einer Zeitschrift |
|---|---|
| Begutachteter Beitrag: | Ja |
| Zusätzliche Informationen: | WOS:000450060100015 |
| Keywords: | Identical location imaging; Heterogeneous catalysis; Conversion detection; Local characterization; Nanoparticles; Polycrystalline foil |
| 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 11:59 |
| Letzte Änderung: | 12 Jun 2025 11:59 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/93714 |