1 Large scale production of multi-walled carbon nanotubes by fluidized bed catalytic chemical vapor deposition : a parametric study Aurore Morançais 1,2 , Brigitte Caussat 2* , Yolande Kihn 3 , Philippe Serp 1* , Philippe Kalck 1 , Dominique Plee, 5 Patrice Gaillard 5 , Daniel Bernard 4 1 LCCFP/ENSIACET/INPT, 118 route de Narbonne, 31077 Toulouse Cedex 4, France 2 LGC/ ENSIACET/INPT, UMR CNRS 5503, 5 rue Paulin Talabot, BP1301, 31106 Toulouse Cedex 1, France 3 CEMES, UPR CNRS 8011, 29 rue Jeanne Marvig, 31055 Toulouse, France 4 ARKEMA, 4-8 cours Michelet, La Défense 10, F-92091, Paris La Défense Cedex, France 5 ARKEMA LACQ RESEARCH CENTER, PO Box 34, 64170 Lacq, France * To whom correspondence should be addressed: Phone: +33 562885700; fax: +33 562885600 (P. Serp), Phone: +33 534615252; fax: +33 534615253 (B. Caussat) E-mail addresses: Philippe.Serp@ensiacet.fr, Brigitte.Caussat@ensiacet.fr