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Kinetic modeling and reaction pathways for thermo-catalytic conversion of carbon dioxide and methane to hydrogen-rich syngas over alpha-alumina supported cobalt catalyst

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dc.contributor.authorAlsaffar M.A.en_US
dc.contributor.authorAyodele B.V.en_US
dc.contributor.authorAli J.M.en_US
dc.contributor.authorAbdel Ghany M.A.en_US
dc.contributor.authorMustapa S.I.en_US
dc.contributor.authorCheng C.K.en_US
dc.contributor.authorid57210601717en_US
dc.contributor.authorid56862160400en_US
dc.contributor.authorid57197302318en_US
dc.contributor.authorid57215843327en_US
dc.contributor.authorid36651549700en_US
dc.contributor.authorid57204938666en_US
dc.date.accessioned2023-05-29T09:06:13Z
dc.date.available2023-05-29T09:06:13Z
dc.date.issued2021
dc.descriptionActivation energy; Catalysis; Catalyst supports; Cobalt; Deposition; Greenhouse gases; Hydrogen production; Kinetic parameters; Kinetic theory; Methane; Surface reactions; Alpha alumina; Alumina-supported cobalt catalyst; Carbon deposition; Catalytic conversion; CH$-4$; Cobalt-alpha alumina catalyst; Greenhouses gas; Kinetic models; Reaction pathways; Thermo-catalytic conversion; Carbon dioxideen_US
dc.description.abstractThis study investigates the kinetic modeling and reaction pathway for the thermo-catalytic conversion of methane (CH4) and Carbon dioxide (CO2) over alpha-alumina supported cobalt catalyst. Rate data was obtained from the thermo-catalytic reaction at a temperature range of 923�1023 K and varying CH4 and CO2 partial pressure (5�50 kPa). The rate data was significantly influenced by the changes in the reaction temperature as well as the CH4 and CO2 partial pressure. To estimate the kinetic parameters, the rate data were fitted with five Langmuir-Hinshelwood kinetic models. The discrimination of the kinetic models using different parameters revealed that the Langmuir-Hinshelwood kinetic model with the assumption of CH4 being associatively adsorbed on a single and CO2 being dissociative adsorbed with bimolecular surface reaction best described the rate data. The analysis of the kinetic model using a non-linear regression solver results in activation energies of 15.88 kJ/mol, 36.78 kJ/mol, 65.51 kJ/mol, and 41.08 kJ/mol for CH4 consumption, CO2 consumption, H2 production, and CO production, respectively. The thermo-catalytic reaction was influenced by carbon as indicated by the rate of carbon deposition which was mainly caused by methane cracking. The reaction pathway for the thermo-catalytic conversion of the CH4 and CO2 over the alpha-alumina supported cobalt catalyst can best be described as by CH4 associative adsorption on the alpha-alumina supported cobalt catalyst single site and CO2 dissociative adsorption with bimolecular surface reaction. � 2021 Hydrogen Energy Publications LLCen_US
dc.description.natureFinalen_US
dc.identifier.doi10.1016/j.ijhydene.2021.04.158
dc.identifier.epage30881
dc.identifier.issue60
dc.identifier.scopus2-s2.0-85106392069
dc.identifier.spage30871
dc.identifier.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85106392069&doi=10.1016%2fj.ijhydene.2021.04.158&partnerID=40&md5=5e284a5603e050691cdce0db00515167
dc.identifier.urihttps://irepository.uniten.edu.my/handle/123456789/26031
dc.identifier.volume46
dc.publisherElsevier Ltden_US
dc.sourceScopus
dc.sourcetitleInternational Journal of Hydrogen Energy
dc.titleKinetic modeling and reaction pathways for thermo-catalytic conversion of carbon dioxide and methane to hydrogen-rich syngas over alpha-alumina supported cobalt catalysten_US
dc.typeArticleen_US
dspace.entity.typePublication
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