Angewandte Chemie International Edition
© WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Inside Cover: The Origin of the Selectivity and Activity of Ruthenium-Cluster Catalysts for Fuel-Cell Feed-Gas Purification: A Gas-Phase Approach (Angew. Chem. Int. Ed. 21/2014)
Hydrogen feed gases generated by reformation of fossil fuels contain minute quantities of CO. For use in fuel cells the CO must be removed selectively to prevent fuel-cell-catalyst poisoning. T. M. Bernhardt, V. Bonačić-Koutecký, and co-workers show in their Communication on page 5467 ff. that sub-nanometer ruthenium clusters are highly effective at doing so by converting CO into benign CH4. Ion-trap mass spectrometry and DFT calculations identify the properties of these clusters responsible for their selectivity and activity.