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Direct Insight into Ethane Oxidative Dehydrogenation over Boron Nitrides

MPG-Autoren
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Schlögl,  Robert
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Su,  Dang Sheng
Shenyang National Laboratory for Materials Science Institute of Metal Research;
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;
Energy Research Resources Division, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences;

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Zitation

Huang, R., Zhang, B., Wang, J., Wu, K.-H., Shi, W., Zhang, Y., et al. (2017). Direct Insight into Ethane Oxidative Dehydrogenation over Boron Nitrides. ChemCatChem, 9(17), 3293-3297. doi:10.1002/cctc.201700725.


Zitierlink: https://hdl.handle.net/11858/00-001M-0000-002D-885B-3
Zusammenfassung
The ultimate objective of chemical conversion is to achieve 100% selectivity considering catalysis, which is also a prodigious challenge for the conversion of light paraffins to olefins all because it involves controlled activation of the highly stable aliphatic C–H bonds. Here we show that metal-free boron nitride (BN) nanosheets not only enable oxidative dehydrogenation of ethane to exclusively ethylene at near 10% conversion, but also deliver a remarkable 60% selectivity at an ethane conversion of 78% and remain stable over 400 hours at 575 °C. Our operando infrared spectroscopy and 18O isotope tracer study explicitly demonstrate that the active sites of B-O(H) are formed at the edges of BN via the aid of ethane and the dehydrogenation circle can be completed by the assistant of O2 over B-O sites.