1. Faculty of Engineering, Christian-Albrechts University of Kiel, Kiel, Germany, A. V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, Moscow, Russia, N. N. Semenov Institute of Chemical Physics, Russian Academy of Sciences, Moscow, Russia, and ITA Institute for Innovative Technologies, Köthen/Halle, Wiesenring 4, D-06120 Lieskau, Germany