1. Mechanical Engineering Department, Khalifa University, Abu Dhabi 127788, United Arab Emirates
2. Center for Catalysis and Separation (CeCaS), Khalifa University, Abu Dhabi 127788, United Arab Emirates
3. Department of Chemistry, Heterogeneous Catalysis Laboratory, University of Cyprus, 1 University Avenue, University Campus, Nicosia 2109, Cyprus
4. Core Laboratories, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
5. Physics Department, Khalifa University, Abu Dhabi 127788, United Arab Emirates
6. The Surface Analysis Laboratory, Engineering and Physical Sciences, University of Surrey, Guildford GU2 4DL, United Kingdom
7. Laboratory of Alternative Fuels and Environmental Catalysis (LAFEC), Department of Chemical Engineering, University of Western Macedonia, Kozani 50100, Greece