Active Sites of Denitrification Catalysts

  • ChemPubSoc Europe Logo
  • Author: David Smith
  • Published Date: 27 May 2015
  • Source / Publisher: Chemistry – A European Journal/Wiley-VCH
  • Copyright: Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
thumbnail image: Active Sites of Denitrification Catalysts

Related Societies

Selective catalytic reduction of nitrogen oxides by ammonia (SCR) is an important way to control NOx emissions, which can result from fuel combustion and cause smog and acid rain. Manganese oxides are the most active known catalysts for low-temperature SCR. However, owing to the diversity and complexity of the surface structures of manganese oxides, little is known about their catalytically active sites (CASs).

Xingfu Tang and colleagues, Fudan University, Shanghai, China, have combined electron microscopy, X-ray absorption spectroscopy, synchrotron X-ray diffraction, and reactivity studies to probe the CASs of a rod-shaped hollandite manganese oxide SCR catalyst.

The CAS is shown to consist of a semi-tunnel structure formed by surface lattice oxygen, which facilitates the adsorption and activation of NH3. Such accurate identification of CASs will aid in the investigation of the SCR reaction mechanism and, in turn, enable design of more efficient SCR catalysts in the future.


Article Views: 2104

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

Bookmark and Share

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

CONNECT: on Facebook on Twitter on YouTube on LinkedIn Sign up for our free newsletter

A product of ChemPubSoc Europe (16 European Chemical Societies)and Wiley-VCH