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

Paper ID Volume ID Publish Year Pages File Format Full-Text
42817 45942 2008 9 PDF Available
Title
Transient kinetic modelling of propane dehydrogenation over a Pt–Sn–K/Al2O3 catalyst
Abstract

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 °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).

Graphical abstractA 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 °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).Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Reaction mechanism; Propane dehydrogenation; Pt–Sn–K/Al2O3 catalyst; Catalyst deactivation; Coke formation rates; Reactor simulation
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Transient kinetic modelling of propane dehydrogenation over a Pt–Sn–K/Al2O3 catalyst
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 349, Issues 1–2, 31 October 2008, Pages 156–164
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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