1. Fundamental Aspects of Materials and Energy, Delft University of Technology, Mekelweg 15, 2629 JB Delft, The Netherlands
2. Laboratory of Inorganic Materials and Catalysis, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
3. Johnson Matthey, P.O. Box 1, Belasis Avenue, Billingham, Cleveland TS23 1LB, United Kingdom