Propane dehydrogenation over a Cr2O3/Al2O3 catalyst: Transient kinetic modeling of propene and coke formation

Jorge Gascon Sabate; C. Téllez; J. Herguido; M. Menéndez

doi:10.1016/S0926-860X(03)00128-5

Propane dehydrogenation over a Cr₂O₃/Al₂O₃ catalyst: Transient kinetic modeling of propene and coke formation

Jorge Gascon Sabate, C. Téllez, J. Herguido, M. Menéndez^*

^*Corresponding author for this work

Physical Sciences and Engineering

Research output: Contribution to journal › Article › peer-review

141 Scopus citations

Abstract

The kinetics of propane dehydrogenation to produce propene over a Cr₂O₃/Al₂O₃ catalyst has been investigated over the temperature range of 525-575°C at atmospheric pressure. The reaction rate of coke formation and its influence over catalyst deactivation has been studied. A Langmuir-Hinshelwood mechanism provides the best fit for the reaction, while a monolayer-multilayer mechanism is proposed to model the coke growth. Furthermore, this model was able to predict coke formation under conditions far from those employed in the experiments used to obtain the kinetics.

Original language	English (US)
Pages (from-to)	105-116
Number of pages	12
Journal	Applied Catalysis A: General
Volume	248
Issue number	1-2
DOIs	https://doi.org/10.1016/S0926-860X(03)00128-5
State	Published - Aug 8 2003

Keywords

Catalyst deactivation
CrO/AlO catalysts
Propane dehydrogenation
Reaction kinetics
Reaction mechanism

ASJC Scopus subject areas

Catalysis
Process Chemistry and Technology

Access to Document

10.1016/S0926-860X(03)00128-5

Cite this

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title = "Propane dehydrogenation over a Cr2O3/Al2O3 catalyst: Transient kinetic modeling of propene and coke formation",

abstract = "The kinetics of propane dehydrogenation to produce propene over a Cr2O3/Al2O3 catalyst has been investigated over the temperature range of 525-575°C at atmospheric pressure. The reaction rate of coke formation and its influence over catalyst deactivation has been studied. A Langmuir-Hinshelwood mechanism provides the best fit for the reaction, while a monolayer-multilayer mechanism is proposed to model the coke growth. Furthermore, this model was able to predict coke formation under conditions far from those employed in the experiments used to obtain the kinetics.",

keywords = "Catalyst deactivation, CrO/AlO catalysts, Propane dehydrogenation, Reaction kinetics, Reaction mechanism",

author = "{Gascon Sabate}, Jorge and C. T{\'e}llez and J. Herguido and M. Men{\'e}ndez",

year = "2003",

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T1 - Propane dehydrogenation over a Cr2O3/Al2O3 catalyst

T2 - Transient kinetic modeling of propene and coke formation

AU - Gascon Sabate, Jorge

AU - Téllez, C.

AU - Herguido, J.

AU - Menéndez, M.

PY - 2003/8/8

Y1 - 2003/8/8

N2 - The kinetics of propane dehydrogenation to produce propene over a Cr2O3/Al2O3 catalyst has been investigated over the temperature range of 525-575°C at atmospheric pressure. The reaction rate of coke formation and its influence over catalyst deactivation has been studied. A Langmuir-Hinshelwood mechanism provides the best fit for the reaction, while a monolayer-multilayer mechanism is proposed to model the coke growth. Furthermore, this model was able to predict coke formation under conditions far from those employed in the experiments used to obtain the kinetics.

AB - The kinetics of propane dehydrogenation to produce propene over a Cr2O3/Al2O3 catalyst has been investigated over the temperature range of 525-575°C at atmospheric pressure. The reaction rate of coke formation and its influence over catalyst deactivation has been studied. A Langmuir-Hinshelwood mechanism provides the best fit for the reaction, while a monolayer-multilayer mechanism is proposed to model the coke growth. Furthermore, this model was able to predict coke formation under conditions far from those employed in the experiments used to obtain the kinetics.

KW - Catalyst deactivation

KW - CrO/AlO catalysts

KW - Propane dehydrogenation

KW - Reaction kinetics

KW - Reaction mechanism

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