1. Center for Materials Science and Nanotechnology (SMN), Department of Chemistry, University of Oslo, 1033 Blindern, 0315 Oslo, Norway
2. SINTEF Industry, Forskningsveien 1, 0373 Oslo, Norway
3. Topsøe A/S, Haldor Topsøes Allé 1, 2800 Kongens Lyngby, Denmark