Nanoscale Hybrid Amorphous/Graphitic Carbon as Key Towards Next-Generation Carbon-Based Oxidative Dehydrogenation Catalysts
Herold F, Prosch S, Oefner N, Brunnengräber K, Leubner O, Hermans Y, Hofmann K, Drochner A, Hofmann JP, Qi W, Etzold BJ (2021)
Publication Type: Journal article
Publication year: 2021
Journal
Book Volume: 60
Pages Range: 5898-5906
Journal Issue: 11
Abstract
A new strategy affords “non-nano” carbon materials as dehydrogenation catalysts that perform similarly to nanocarbons. Polymer-based carbon precursors that combine a soft-template approach with ion adsorption and catalytic graphitization are key to this synthesis strategy, thus offering control over macroscopic shape, texture, and crystallinity and resulting in a hybrid amorphous/graphitic carbon after pyrolysis. From this intermediate the active carbon catalyst is prepared by removing the amorphous parts of the hybrid carbon materials via selective oxidation. The oxidative dehydrogenation of ethanol was chosen as test reaction, which shows that fine-tuning the synthesis of the new carbon catalysts allows to obtain a catalytic material with an attractive high selectivity (82 %) similar to a carbon nanotube reference, while achieving 10 times higher space–time yields at 330 °C. This new class of carbon materials is accessible via a technically scalable, reproducible synthetic pathway and exhibits spherical particles with diameters around 100 μm, allowing unproblematic handling similar to classic non-nano catalysts.
Authors with CRIS profile
Involved external institutions
Technische Universität Darmstadt
Germany (DE)
Institute of Metal Research Chinese Academy of Sciences (IMR CAS)
China (CN)
Germany (DE)
Institute of Metal Research Chinese Academy of Sciences (IMR CAS)
China (CN)
How to cite
APA:
Herold, F., Prosch, S., Oefner, N., Brunnengräber, K., Leubner, O., Hermans, Y.,... Etzold, B.J. (2021). Nanoscale Hybrid Amorphous/Graphitic Carbon as Key Towards Next-Generation Carbon-Based Oxidative Dehydrogenation Catalysts. Angewandte Chemie International Edition, 60(11), 5898-5906. https://doi.org/10.1002/anie.202014862
MLA:
Herold, Felix, et al. "Nanoscale Hybrid Amorphous/Graphitic Carbon as Key Towards Next-Generation Carbon-Based Oxidative Dehydrogenation Catalysts." Angewandte Chemie International Edition 60.11 (2021): 5898-5906.
BibTeX: Download