1. Department of Chemical Engineering University of Patras Foundation of Research and Technology Institute of Chemical Engineering Sciences (FORTH/ICEHT) Stadiou Street, 1, Platani Patras 265 04 Greece
2. Institute for the Study of Nanostructured Materials (ISMN) National Research Council of Italy (CNR) Via Salaria km 29,300 00015 Monterotondo Rome Italy
3. Laboratory of Technological Processes and Catalysis Institute of Chemistry Federal University of Rio Grande do Sul Av. Bento Gonçalves 9500 Porto Alegre RS, 91.501-970 Brazil