1. Research Centre for Chemical Processes Engineering and Forest Products, Chemical Engineering Department, Coimbra University, Pólo II, Pinhal de Marrocos, 3030-290 Coimbra, Portugal, Chemical Engineering Department, Coimbra University, Pólo II, Pinhal de Marrocos, 3030-290 Coimbra, Portugal, and Chemical Engineering Department, Faculty of Chemistry, Complutense University, 28040 Madrid, Spain