1. CNRS; LRGP; UMR 7274 Nancy F-54001 France
2. Université de Lorraine; LRGP; UMR 7274 Nancy F-54001 France
3. Chemical Process and Energy Resources Institute; Centre for Research and Technology Hellas; P.O. Box 60361, Thermi 570 01 Thessaloniki Greece
4. Department of Chemical Engineering; Aristotle University of Thessaloniki; P.O. Box 472 Thessaloniki 541 24 Greece