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dc.contributor.authorAlabi, Wahab
dc.contributor.authorAtanda, Luqman
dc.contributor.authorJermy, Rabindran
dc.contributor.authorAl-Khattaf, Sulaiman
dc.date.accessioned2016-02-28T07:59:03Z
dc.date.available2016-02-28T07:59:03Z
dc.date.issued2012-07
dc.identifier.citationAlabi W, Atanda L, Jermy R, Al-Khattaf S (2012) Kinetics of toluene alkylation with methanol catalyzed by pure and hybridized HZSM-5 catalysts. Chemical Engineering Journal 195-196: 276–288. Available: http://dx.doi.org/10.1016/j.cej.2012.04.100.
dc.identifier.issn1385-8947
dc.identifier.doi10.1016/j.cej.2012.04.100
dc.identifier.urihttp://hdl.handle.net/10754/600109
dc.description.abstractA kinetic study of toluene alkylation with methanol was performed over pure HZSM-5, mordenite/ZSM-5 (hybrid of mordenite and HZSM-5), and ZM13 (composite mixture of HZSM-5 and MCM-41 at pH 13). Experimental runs were conducted using a batch fluidized bed reactor at temperatures of 300, 350 and 400 °C and reaction times of 3, 5, 7, 10, 13, 15 and 20. s. The rate of toluene methylation and toluene disproportionation were studied on the three catalysts (toluene alkylation is usually accompanied by toluene disproportionation on acid catalyst). Based on the results obtained, a simplified power law kinetic model consisting of three reactions was developed to estimate the activation energies of toluene methylation and disproportionation simultaneously. Coke formation on catalysts was accounted for using both reaction time and reactant conversion decay functions. All parameters were estimated based on quasi-steady state approximation. Estimated kinetic parameters were in good agreement with experimental results. The order of alkylation ability of the catalysts was found to be ZM13 > HZSM-5 > mordenite/ZSM-5, while the reverse is for toluene disproportionation (mordenite/ZSM-5 > HZSM-5 > ZM13). Thus, alkylation of toluene is most favorable on ZM13 due to combined effect of mesoporosity induced through its synthetic route and acid content. Toluene/MeOH molar ratio of 1:1 was most suitable for toluene alkylation reaction. © 2012 Elsevier B.V.
dc.description.sponsorshipThe authors wish to appreciate the support of King Abdullah University of Science and Technology (KAUST). Also, the support of King Fahd University of Petroleum and Minerals is highly appreciated. Technical support by Mr. Mariano Gica in the catalytic testing is very much appreciated.
dc.publisherElsevier BV
dc.subjectDisproportionation reaction
dc.subjectPower law model
dc.subjectReactant conversion
dc.subjectReaction time
dc.subjectToluene alkylation
dc.subjectXylene
dc.subjectZeolite catalyst
dc.titleKinetics of toluene alkylation with methanol catalyzed by pure and hybridized HZSM-5 catalysts
dc.typeArticle
dc.identifier.journalChemical Engineering Journal
dc.contributor.institutionKing Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia
kaust.personAlabi, Wahab
kaust.personAtanda, Luqman
kaust.personJermy, Rabindran
kaust.personAl-Khattaf, Sulaiman
kaust.grant.fundedcenterKAUST Center In Development at KFUPM


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