Kinetic Modeling of Propane Dehydrogenation on Industrial Pt-Sn/γ-Al2O3 in Presence of Oxygenated Compounds

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Barghi, Bijan | 2011

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 41468 (06)
University: Sharif University of Technology
Department: Chemical and Petrolum Engineering
Advisor(s): Khorasheh, Farhad
Abstract:
The study on the propane dehydrogenation process has been receiving significant attention due to the growing demand for propylene. The aim of this research is to develop an appropriate kinetic mechanism for dehydrogenation of propane over an industrial Pt–Sn/γ-Al2O3 catalyst in the presence of a very small amount of water. The reaction is carried out over the temperature range of 575 – 620 º C at atmospheric pressure. The results showed that a small amount of water and methanol can improve the performance of catalyst and also, increase the selectivity to COx. Addition the 0.5, 0.45, 0.3 water and 0.1, 0.05, 0.02 methanol are the optimum amount of these oxygenated compounds in order at 620, 600, 575 . Small addition of these oxygenated in optimum ratio can reduce the amount of coke was formed over catalyst
Keywords:
Propane Dehydrogenation ; Oxygenative Additives ; Reaction Mechanism ; Platinum Tin-Gama Alumina (Pt Sn/r-Al2O3)Catalyst ; Propylene Yield