1. LSRE, Laboratory of Separation and Reaction Engineering, Department of Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal, and LSRE, Laboratory of Separation and Reaction Engineering, Braganca Polytechnic Institute, Campus Santa Apolónia Ap 1134, 5301-857 Bragança, Portugal