Abstract
The kinetics of propane oxidative dehydrogenation over V-Mo and Sr-V-Mo oxide catalysts supported on gamma-Al2O3 was investigated in the temperature range of 450-550 degrees C in an integral reactor. The reaction network for V-Mo catalyst was found to involve parallel and consecutive routes. However, the presence of strontium in the catalyst matrix inhibited the consecutive route. Langmuir-Hinshelwood. Eley-Rideal and Mars-Van-Krevelen kinetic models were employed in this investigation. For V-Mo catalyst (higher reducibility), the best fitting was obtained using MVK model. However, MVK model was not suitable for Sr-VMo catalyst thus confirming its lower reducibility and LH model was more appropriate. (C) 2012 Elsevier B.V. All rights reserved.