[1] Gaz France, Direct Rech, F-93211 La Plaine St Denis, France
[2] Univ Paris 06, CNRS, UMR 7609, Lab React Surface, F-75252 Paris 05, France
[3] Univ Paris 07, CNRS, UMR 7086, ITODYS,Grp LCMDC, F-75251 Paris 05, France
[4] ADEME, F-49004 Angers, France