Superior Selectivity of Boron Nitride Catalysts

  • Author: Rose Puls
  • Published Date: 05 August 2017
  • Source / Publisher: ChemCatChem/Wiley-VCH
  • Copyright: Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
thumbnail image: Superior Selectivity of Boron Nitride Catalysts

Related Societies

The current price volatility of traditional oil feedstocks has led to an increased use of shale gas as feeds to steam crackers. This creates a gap between supply and demand of propene and butenes. To close this gap, routes to producing olefins from alkanes have been investigated, with the oxidative dehydrogenation of alkanes (ODH) being one possibility. When attempting partial oxidation, very often the products are more reactive than the reactants with over-oxidation occurring to form CO2.

Ive Hermans, University of Wisconsin-Madison, USA, and colleagues have used hexagonal boron nitrides (hBN), an analog to graphene, as a catalyst for ODH. In the selective oxidation of n-butane and isobutane, hBN proved to be active and highly selective towards C4 olefins. Furthermore, when compared to the state-of-art ODH catalysts, by-products are other light olefins and not COx compounds.

Kinetic and spectroscopic studies reveal that the reaction proceeds between chemisorbed oxygen and gas-phase alkanes. While this study focused on intrinsic activity rather than maximizing products yields, the results are promising for improving selectivity towards C4-olefins, with very little formation of COx products. The researchers note that "improvements of the hBN catalysts must focus on elimination of light olefin production pathways".


Article Views: 2902

Sign in Area

Please sign in below

Additional Sign In options

Please note that to comment on an article you must be registered and logged in.
Registration is for free, you may already be registered to receive, e.g., the newsletter. When you register on this website, please ensure you view our terms and conditions. All comments are subject to moderation.

Article Comments - To add a comment please sign in

If you would like to reuse any content, in print or online, from, please contact us first for permission. more

Follow on Facebook Follow on Twitter Follow on YouTube Follow on LinkedIn Follow on Instagram RSS Sign up for newsletters

Magazine of Chemistry Europe (16 European Chemical Societies) published by Wiley-VCH