1. Department of Chemical Engineering, Aristotle University of Thessaloniki, University Campus,
GR-54124 Thessaloniki, Greece
2. Institute for Integrated Catalysis, Pacific Northwest National Laboratory, 902 Battelle
Boulevard, Richland, Washington 99352, United States
3. Department of Chemistry and Catalysis
Research Center, Technische Universität München, Lichtenbergstrasse 4, 85748 Garching, Germany