Show simple item record

dc.contributor.authorHussain, Muhammad Mustafa
dc.contributor.authorAtanda, Luqman
dc.contributor.authorAl-Yassir, Nabil
dc.contributor.authorAl-Khattaf, Sulaiman
dc.date.accessioned2016-02-28T07:59:01Z
dc.date.available2016-02-28T07:59:01Z
dc.date.issued2012-10
dc.identifier.citationHossain MM, Atanda L, Al-Yassir N, Al-Khattaf S (2012) Kinetics modeling of ethylbenzene dehydrogenation to styrene over a mesoporous alumina supported iron catalyst. Chemical Engineering Journal 207-208: 308–321. Available: http://dx.doi.org/10.1016/j.cej.2012.06.108.
dc.identifier.issn1385-8947
dc.identifier.doi10.1016/j.cej.2012.06.108
dc.identifier.urihttp://hdl.handle.net/10754/600108
dc.description.abstractThe kinetics of ethylbenzene (EB) dehydrogenation over a FeO x-meso-Al 2O 3 catalyst is studied. The models were developed based on physicochemical characterization and a CREC fluidized Riser Simulator data. N 2 adsorption shows that the synthesized FeO x-meso-Al 2O 3 catalyst is mesoporous with pore size between 9 and 35nm. TPR profile indicates that iron on meso-Al 2O 3 forms easily reducible nanostructured crystals which is confirmed by TEM image. NH 3- and CO-TPD analysis, respectively reveals the availability of both acidic and basic sites. The dehydrogenation of ethylbenzene on FeO x-meso-Al 2O 3 catalyst mainly gives styrene (∼99%) while a small amount of benzene, toluene and coke are also detected. Based on the experimental observations two Langmuir-Hinshelwood type kinetics models are formulated. The possible catalyst deactivation is expressed as function of EB conversion. Parameters are estimated by fitting of the experimental data implemented in MATLAB. Results show that one type site Langmuir-Hinshelwood model appropriately describes the experimental data, with adequate statistical fitting indicators and also satisfied the physical constraints. The activation energy for the formation of styrene (80kJ/mol) found to be significantly lower than that of the undesired products benzene (144kJ/mol) and toluene (164kJ/mol). The estimated heat of adsorptions of EB and ST are found to be 55kJ/mol and 19kJ/mol, respectively. © 2012 Elsevier B.V.
dc.publisherElsevier BV
dc.subjectCatalyst deactivation model
dc.subjectDehydrogenation of ethylbenzene
dc.subjectLangmuir-Hinshelwood model
dc.subjectMeso-alumina
dc.subjectStyrene
dc.subjectSupported iron catalyst
dc.titleKinetics modeling of ethylbenzene dehydrogenation to styrene over a mesoporous alumina supported iron catalyst
dc.typeArticle
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
dc.contributor.departmentElectrical Engineering Program
dc.identifier.journalChemical Engineering Journal
dc.contributor.institutionDepartment of Chemical Engineering, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
kaust.personHussain, Muhammad Mustafa
kaust.personAtanda, Luqman
kaust.personAl-Yassir, Nabil
kaust.personAl-Khattaf, Sulaiman
kaust.grant.fundedcenterKAUST Center In Development at KFUPM


This item appears in the following Collection(s)

Show simple item record