Kinetic modeling of ethylbenzene dehydrogenation over hydrotalcite catalysts

Luqman Atanda; Nabil Al-Yassir; Sulaiman Al-Khattaf

doi:10.1016/j.cej.2011.05.053

Kinetic modeling of ethylbenzene dehydrogenation over hydrotalcite catalysts

Luqman Atanda
, Nabil Al-Yassir
, Sulaiman Al-Khattaf^*

^*Corresponding author for this work

King Fahd University of Petroleum & Minerals

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

14 Scopus citations

Abstract

Kinetics of ethylbenzene dehydrogenation to styrene was investigated over a series of quaternary mixed oxides of Mg₃Fe_0.25Me_0.25Al_0.5 (Me=Co, Mn and Ni) catalysts prepared by calcination of hydrotalcite-like compounds and compared with commercial catalyst. The study was carried out in the absence of steam using a riser simulator at 400, 450, 500 and 550°C for reaction times of 5, 10, 15 and 20s. Mg₃Fe_0.25Mn_0.25Al_0.5 afforded the highest ethylbenzene conversion of 19.7% at 550°C. Kinetic parameters for the dehydrogenation process were determined using the catalyst deactivation function based on reactant conversion model. The apparent activation energies for styrene production were found to decrease as follows: E_1-Ni>E_1-Co>E_1-Mn.

Original language	English
Pages (from-to)	1387-1398
Number of pages	12
Journal	Chemical Engineering Journal
Volume	171
Issue number	3
DOIs	https://doi.org/10.1016/j.cej.2011.05.053
State	Published - 15 Jul 2011

Bibliographical note

Funding Information:
This publication was based on work supported in part by Award No. K-C1-019-12 made by King Abdullah University of Science and Technology (KAUST) . In addition, the authors express their appreciation for the financial support from the Centre for Research Excellence in Petroleum Refining and Petrochemicals at King Fahd University of Petroleum & Minerals . The authors also acknowledge the contribution of Prof. Emeritus K. Takehira (Hiroshima University, Higashi-Hiroshima, Japan). Mr. Mariano Gica is also acknowledged for his help during the experimental work.

Keywords

Dehydrogenation
Ethylbenzene
Hydrotalcite
Kinetic modeling

ASJC Scopus subject areas

General Chemistry
Environmental Chemistry
General Chemical Engineering
Industrial and Manufacturing Engineering

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10.1016/j.cej.2011.05.053

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@article{54bd7287a382450d98a5a50e76106a91,

title = "Kinetic modeling of ethylbenzene dehydrogenation over hydrotalcite catalysts",

abstract = "Kinetics of ethylbenzene dehydrogenation to styrene was investigated over a series of quaternary mixed oxides of Mg3Fe0.25Me0.25Al0.5 (Me=Co, Mn and Ni) catalysts prepared by calcination of hydrotalcite-like compounds and compared with commercial catalyst. The study was carried out in the absence of steam using a riser simulator at 400, 450, 500 and 550°C for reaction times of 5, 10, 15 and 20s. Mg3Fe0.25Mn0.25Al0.5 afforded the highest ethylbenzene conversion of 19.7\% at 550°C. Kinetic parameters for the dehydrogenation process were determined using the catalyst deactivation function based on reactant conversion model. The apparent activation energies for styrene production were found to decrease as follows: E1-Ni>E1-Co>E1-Mn.",

keywords = "Dehydrogenation, Ethylbenzene, Hydrotalcite, Kinetic modeling",

author = "Luqman Atanda and Nabil Al-Yassir and Sulaiman Al-Khattaf",

note = "Funding Information: This publication was based on work supported in part by Award No. K-C1-019-12 made by King Abdullah University of Science and Technology (KAUST) . In addition, the authors express their appreciation for the financial support from the Centre for Research Excellence in Petroleum Refining and Petrochemicals at King Fahd University of Petroleum \& Minerals . The authors also acknowledge the contribution of Prof. Emeritus K. Takehira (Hiroshima University, Higashi-Hiroshima, Japan). Mr. Mariano Gica is also acknowledged for his help during the experimental work.",

year = "2011",

month = jul,

day = "15",

doi = "10.1016/j.cej.2011.05.053",

language = "English",

volume = "171",

pages = "1387--1398",

journal = "Chemical Engineering Journal",

issn = "1385-8947",

publisher = "Elsevier B.V.",

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T1 - Kinetic modeling of ethylbenzene dehydrogenation over hydrotalcite catalysts

AU - Atanda, Luqman

AU - Al-Yassir, Nabil

AU - Al-Khattaf, Sulaiman

N1 - Funding Information: This publication was based on work supported in part by Award No. K-C1-019-12 made by King Abdullah University of Science and Technology (KAUST) . In addition, the authors express their appreciation for the financial support from the Centre for Research Excellence in Petroleum Refining and Petrochemicals at King Fahd University of Petroleum & Minerals . The authors also acknowledge the contribution of Prof. Emeritus K. Takehira (Hiroshima University, Higashi-Hiroshima, Japan). Mr. Mariano Gica is also acknowledged for his help during the experimental work.

PY - 2011/7/15

Y1 - 2011/7/15

N2 - Kinetics of ethylbenzene dehydrogenation to styrene was investigated over a series of quaternary mixed oxides of Mg3Fe0.25Me0.25Al0.5 (Me=Co, Mn and Ni) catalysts prepared by calcination of hydrotalcite-like compounds and compared with commercial catalyst. The study was carried out in the absence of steam using a riser simulator at 400, 450, 500 and 550°C for reaction times of 5, 10, 15 and 20s. Mg3Fe0.25Mn0.25Al0.5 afforded the highest ethylbenzene conversion of 19.7% at 550°C. Kinetic parameters for the dehydrogenation process were determined using the catalyst deactivation function based on reactant conversion model. The apparent activation energies for styrene production were found to decrease as follows: E1-Ni>E1-Co>E1-Mn.

AB - Kinetics of ethylbenzene dehydrogenation to styrene was investigated over a series of quaternary mixed oxides of Mg3Fe0.25Me0.25Al0.5 (Me=Co, Mn and Ni) catalysts prepared by calcination of hydrotalcite-like compounds and compared with commercial catalyst. The study was carried out in the absence of steam using a riser simulator at 400, 450, 500 and 550°C for reaction times of 5, 10, 15 and 20s. Mg3Fe0.25Mn0.25Al0.5 afforded the highest ethylbenzene conversion of 19.7% at 550°C. Kinetic parameters for the dehydrogenation process were determined using the catalyst deactivation function based on reactant conversion model. The apparent activation energies for styrene production were found to decrease as follows: E1-Ni>E1-Co>E1-Mn.

KW - Dehydrogenation

KW - Ethylbenzene

KW - Hydrotalcite

KW - Kinetic modeling

UR - https://www.scopus.com/pages/publications/79960013284

U2 - 10.1016/j.cej.2011.05.053

DO - 10.1016/j.cej.2011.05.053

M3 - Article

AN - SCOPUS:79960013284

SN - 1385-8947

VL - 171

SP - 1387

EP - 1398

JO - Chemical Engineering Journal

JF - Chemical Engineering Journal

IS - 3

ER -

Kinetic modeling of ethylbenzene dehydrogenation over hydrotalcite catalysts

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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