1. Cracow University of Technology Faculty of Chemical Engineering and Technology Warszawska 24 31‐155 Cracow Poland
2. Université de Bordeaux CNRS, Bordeaux INP, LCPO, UMR 5629 F‐33600 Pessac France
3. ITERG Lipochimie Hall Industriel 11 rue Gaspard Monge 33600 Pessac Cedex France