Abstract
We report an efficient process to dehydrogenate formaldehyde in alkaline solution, catalyzed by carbon nanotubes (CNTs) via a unique reaction mechanism involving molecular O2. The superior catalytic performance of carbon nanotubes (CNTs) compared to the other carbon-based catalysts is attributed to their sp2-carbon-rich surface, hydrophilicity and abundant surface defects, which are the most plausible active sites. Peroxide species originating from the activation of adsorbed molecular oxygen on the CNTs is found to be a key to C–H activation, leading to efficient hydrogen production. The cost-effective carbon-based dehydrogenation catalysts offer new opportunities to the development of novel liquid organic hydrogen carrier technologies.
Original language | English |
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Pages (from-to) | 27877-27886 |
Number of pages | 10 |
Journal | International Journal of Hydrogen Energy |
Volume | 47 |
Issue number | 65 |
DOIs | |
Publication status | Published - Jul 30 2022 |
Externally published | Yes |
Bibliographical note
Publisher Copyright:© 2022 Hydrogen Energy Publications LLC
ASJC Scopus Subject Areas
- Renewable Energy, Sustainability and the Environment
- Fuel Technology
- Condensed Matter Physics
- Energy Engineering and Power Technology
Keywords
- Carbon catalysts
- Dehydrogenation
- Formaldehyde
- Oxygen-mediated catalysis
- Surface defects