Transient kinetic modelling of propane dehydrogenation over a Pt-Sn-K/Al2O3 catalyst

A complete kinetic model of propane dehydrogenation to produce propene over a Pt-Sn-K/Al2O3 Catalyst was obtained. This has been investigated over the temperature range of 460-540 degrees C at atmospheric pressure. A Langmuir-Hinshelwood mechanism provides the best fit for propane dehydrogenation, while a monolayer-multilayer mechanism is proposed for modelling the coke formation. In addition, the reaction rate of coke formation and its influence on catalyst deactivation and subsequent regeneration have been studied. Finally, a suitable mathematical model is developed for simulating the process behaviour in a two-zone fluidized bed reactor (TZFBR). (c) 2008 Elsevier B.V. All rights reserved.