Separating O2 from Air with Less Energy

  • Author: ChemistryViews
  • Published: 03 September 2011
  • Copyright: Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
  • Source / Publisher: Journal of the American Chemical Society/ACS Publications
thumbnail image: Separating O<sub>2</sub> from Air with Less Energy

With over 100 million tons produced annually, O2 is one of the most widely used commodity chemicals in the world. The separation of O2 from air is carried out on a large scale using an energy-intensive cryogenic distillation process.

Jeffrey Long and colleagues, University of California, Berkeley, USA, have synthesized a new microporous metal–organic framework (MOF) with open iron(II) coordination sites. The MOF selectively binds O2 over N2. At 211 K, O2 uptake is fully reversible with a capacity of 18.2 wt %, corresponding to the adsorption of one O2 molecule per iron center. Ideal adsorbed solution theory indicates that the material should be capable of high-capacity separation at temperatures as high as 226 K.

Being able to separate O2 from air at this temperature, which is substantially higher than the temperatures currently used, would lower energy and capital costs.

Article Views: 2339

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