1. UMR 7285 CNRS, IC2 MP, Université de Poitiers, 1 rue Marcel Doré TSA 41105‐ 86 073 POITIERS Cédex 9 (France)
2. Faculty of Chemical Engineering and Environmental Protection, Gheorghe Asachi Technical University of Iasi, 73 D. Mangeron Bvd., 700050 Iasi (Romania)