Kinetic modeling of ethylbenzene dehydrogenation over hydrotalcite catalysts

Handle URI:
http://hdl.handle.net/10754/600107
Title:
Kinetic modeling of ethylbenzene dehydrogenation over hydrotalcite catalysts
Authors:
Atanda, Luqman; Al-Yassir, Nabil; Al-Khattaf, Sulaiman
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. © 2011 Elsevier B.V.
Citation:
Atanda L, Al-Yassir N, Al-Khattaf S (2011) Kinetic modeling of ethylbenzene dehydrogenation over hydrotalcite catalysts. Chemical Engineering Journal 171: 1387–1398. Available: http://dx.doi.org/10.1016/j.cej.2011.05.053.
Publisher:
Elsevier BV
Journal:
Chemical Engineering Journal
Issue Date:
Jul-2011
DOI:
10.1016/j.cej.2011.05.053
Type:
Article
ISSN:
1385-8947
Sponsors:
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.
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Publications Acknowledging KAUST Support

Full metadata record

DC FieldValue Language
dc.contributor.authorAtanda, Luqmanen
dc.contributor.authorAl-Yassir, Nabilen
dc.contributor.authorAl-Khattaf, Sulaimanen
dc.date.accessioned2016-02-28T07:59:00Zen
dc.date.available2016-02-28T07:59:00Zen
dc.date.issued2011-07en
dc.identifier.citationAtanda L, Al-Yassir N, Al-Khattaf S (2011) Kinetic modeling of ethylbenzene dehydrogenation over hydrotalcite catalysts. Chemical Engineering Journal 171: 1387–1398. Available: http://dx.doi.org/10.1016/j.cej.2011.05.053.en
dc.identifier.issn1385-8947en
dc.identifier.doi10.1016/j.cej.2011.05.053en
dc.identifier.urihttp://hdl.handle.net/10754/600107en
dc.description.abstractKinetics 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. © 2011 Elsevier B.V.en
dc.description.sponsorshipThis 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.en
dc.publisherElsevier BVen
dc.subjectDehydrogenationen
dc.subjectEthylbenzeneen
dc.subjectHydrotalciteen
dc.subjectKinetic modelingen
dc.titleKinetic modeling of ethylbenzene dehydrogenation over hydrotalcite catalystsen
dc.typeArticleen
dc.identifier.journalChemical Engineering Journalen
dc.contributor.institutionKing Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabiaen
kaust.authorAtanda, Luqmanen
kaust.authorAl-Yassir, Nabilen
kaust.authorAl-Khattaf, Sulaimanen
kaust.grant.fundedcenterKAUST Center In Development at KFUPMen
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