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CAT-C: Clean-Air-Technologies by development of new catalysts

The project Clean-Air-Technologies  by development of new catalysts is (CAT-C) a research project funded by Innovation Fund Denmark for the period 2013-2018

Project partners are:

As air quality problems persist in major cities and will continue to do so for the foreseeable future, there is currently a big incentive for the development of more capable catalyst technologies for the abatement of harmful emissions from combustion in stationary and automotive applications. Through fundamental research, obtained by an interdisciplinary approach, the objective of the CAT-C project is to facilitate the development better, more flexible and less expensive catalysts for waste gas treatment, emission control and fossil fuel refining, which are catalysts with a particularly high market potential due to the political and public focus on gas emissions.

The CAT-C collaboration has access to the most recent and most powerful techniques for fundamental catalysis research, including atom-resolved scanning probe microscopy (SPM), in-situ x-ray spectroscopy, in situ and aberration corrected transmission electron microscopy (TEM) and density functional theory (DFT) calculations. This unprecedented strong combination of techniques allows us to characterize and understand the chemical state and atomic structure of the catalyst in a whole new way and thereby reveal the active sites controlling catalytic activity.

Affiliated partners are:

  • SuperSTEM Laboratory, STFC Daresbury, United Kingdom
  • Lawrence Berkeley National Laboratories, USA
  • Computational Surface Science and Catalysis Group at University of Wisconsin-Madison

 List of publications in the CAT-C project 


"Visualizing the stoichiometry of industrial-style Co-Mo-S catalysts with single-atom sensitivity"

Promoting a cleaner environment: An industrial-style Co-Mo-S catalyst were stoichiometrically analyzed at the single-atom level using electron microscopy methods at the SuperSTEM laboratory. Atom by atom, this first-ever analysis resolved single Co atom sites that is responsible for promoting S removal from oil distillates. 

Zhu, Y., Ramasse, Q. M., Brorson, M., Moses, P. G., Hansen, L. P., Kisielowski, C. F. and Helveg, S. (2014), Visualizing the Stoichiometry of Industrial-Style Co-Mo-S Catalysts with Single-Atom Sensitivity. Angew. Chem. Int. Ed., 53: 10723–10727. doi: 10.1002/anie.201405690

Link to article


"Growth mechanism for single- and multi-layer MoSnanocrystals"

Understanding the how MoS2 nanocatalyst forms: The growth of MoS2 nanocrystals was monitored for the first time in situ using  in situ transmission electron microscopy. The findings explain why process parameters (such as temperature) can tune the relative fraction of single- and multi-layered MoS2 nanocrystals which is important for the use in hydrotreating reactions.

Lars P. Hansen, Erik Johnson, Michael Brorson, and Stig Helveg. The Journal of Physical Chemistry C 2014 118 (39), 22768-22773 DOI:10.1021/jp5069279

Link to article

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