Kinetic study of iso-octane steam reforming over a nickel-based catalyst

Praharso; A. A. Adesina; D. L. Trimm; N. W. Cant

doi:10.1016/j.cej.2003.10.002

Kinetic study of iso-octane steam reforming over a nickel-based catalyst

Praharso, A. A. Adesina, D. L. Trimm^*, N. W. Cant

^*Corresponding author for this work

Department of Molecular Sciences

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

33 Citations (Scopus)

Abstract

The kinetics of iso-octane steam reforming over a nickel based catalyst has been examined as a function of iso-octane and steam partial pressures at various temperatures. The reaction order is 0.2 with respect to iso-octane, suggesting strong coverage of nickel by iso-octane and 0.5 with respect to steam, indicating dissociative adsorption of steam. Indeed, a Langmuir-Hinshelwood (LH) mechanism requiring the dissociative adsorption of iso-octane and steam on two different sites appeared to be the most plausible pathway for the steam reforming reaction. The activation energy of 44 ± 2.2 kJ mol^-1 estimated from the LH model is consistent with the trend previously reported for other lower hydrocarbons.

Original language	English
Pages (from-to)	131-136
Number of pages	6
Journal	Chemical Engineering Journal
Volume	99
Issue number	2
DOIs	https://doi.org/10.1016/j.cej.2003.10.002
Publication status	Published - 15 Jun 2004

Keywords

Gasoline
Iso-Octane
Kinetic
Nickel
Steam reforming

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title = "Kinetic study of iso-octane steam reforming over a nickel-based catalyst",

abstract = "The kinetics of iso-octane steam reforming over a nickel based catalyst has been examined as a function of iso-octane and steam partial pressures at various temperatures. The reaction order is 0.2 with respect to iso-octane, suggesting strong coverage of nickel by iso-octane and 0.5 with respect to steam, indicating dissociative adsorption of steam. Indeed, a Langmuir-Hinshelwood (LH) mechanism requiring the dissociative adsorption of iso-octane and steam on two different sites appeared to be the most plausible pathway for the steam reforming reaction. The activation energy of 44 ± 2.2 kJ mol-1 estimated from the LH model is consistent with the trend previously reported for other lower hydrocarbons.",

keywords = "Gasoline, Iso-Octane, Kinetic, Nickel, Steam reforming",

author = "Praharso and Adesina, {A. A.} and Trimm, {D. L.} and Cant, {N. W.}",

year = "2004",

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T1 - Kinetic study of iso-octane steam reforming over a nickel-based catalyst

AU - Praharso,

AU - Adesina, A. A.

AU - Trimm, D. L.

AU - Cant, N. W.

PY - 2004/6/15

Y1 - 2004/6/15

N2 - The kinetics of iso-octane steam reforming over a nickel based catalyst has been examined as a function of iso-octane and steam partial pressures at various temperatures. The reaction order is 0.2 with respect to iso-octane, suggesting strong coverage of nickel by iso-octane and 0.5 with respect to steam, indicating dissociative adsorption of steam. Indeed, a Langmuir-Hinshelwood (LH) mechanism requiring the dissociative adsorption of iso-octane and steam on two different sites appeared to be the most plausible pathway for the steam reforming reaction. The activation energy of 44 ± 2.2 kJ mol-1 estimated from the LH model is consistent with the trend previously reported for other lower hydrocarbons.

AB - The kinetics of iso-octane steam reforming over a nickel based catalyst has been examined as a function of iso-octane and steam partial pressures at various temperatures. The reaction order is 0.2 with respect to iso-octane, suggesting strong coverage of nickel by iso-octane and 0.5 with respect to steam, indicating dissociative adsorption of steam. Indeed, a Langmuir-Hinshelwood (LH) mechanism requiring the dissociative adsorption of iso-octane and steam on two different sites appeared to be the most plausible pathway for the steam reforming reaction. The activation energy of 44 ± 2.2 kJ mol-1 estimated from the LH model is consistent with the trend previously reported for other lower hydrocarbons.

KW - Gasoline

KW - Iso-Octane

KW - Kinetic

KW - Nickel

KW - Steam reforming

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DO - 10.1016/j.cej.2003.10.002

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JO - Chemical Engineering Journal

JF - Chemical Engineering Journal

SN - 1385-8947

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Kinetic study of iso-octane steam reforming over a nickel-based catalyst

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Keywords

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