Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/2002
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dc.contributor.authorÜnveren, Ercan-
dc.contributor.authorGünüz, Gönül-
dc.contributor.authorÇakıcıoğlu Özkan, Fehime-
dc.date.accessioned2016-07-28T10:56:04Z
dc.date.available2016-07-28T10:56:04Z
dc.date.issued2005-01
dc.identifier.citationÜnveren, E., Günüz, G., and Çakıcıoğlu Özkan, S. F. (2005). Isomerization of alpha-pinene over acid treated natural zeolite. Chemical Engineering Communications, 192(1-3), 386-404. doi:10.1080/00986440590477773en_US
dc.identifier.issn0098-6445
dc.identifier.issn0098-6445-
dc.identifier.urihttps://doi.org/10.1080/00986440590477773
dc.identifier.urihttp://hdl.handle.net/11147/2002
dc.description.abstractIn this study, isomerization of α-pinene was studied over several acid-treated natural zeolite catalysts rich in clinoptilolite. Zeolite samples were contacted with HCl at different concentrations at 30°'C or at 60°C for 3 and 24 hours and tested in isomerization reaction of alpha-pinene. The catalysts prepared were characterized by XRD, nitrogen adsorption, and acidity studies. Acidity strength and the distribution of Lewis and Brönsted acid sites of the catalysts were determined, and their catalytic activities in α-pinene isomerization and selectivities to main reaction products, camphene and limonene, were investigated. Acid treatment improved the selectivity of catalyst samples to camphene, decreasing the selectivity to limonene, probably forcing limonene to secondary reactions at high conversions. The kinetics of α-pinene consumption was described by first-order kinetics. Two kinetic models were tested for the reaction mechanism and one model was found to give a good correlation between the theoretical and experimental data. In the models, the key intermediate was the pinylcarbonium ion, which was formed irreversibly from α-pinene. Number and distribution of Lewis and Brönsted acid sites affect the formation of bicyclic and monocyclic products.en_US
dc.description.sponsorshipTurkish Scientific Research Council: MISAG-120; Ege University Research Fund: 98 BIL 018en_US
dc.language.isoenen_US
dc.publisherTaylor and Francis Ltd.en_US
dc.relation.ispartofChemical Engineering Communicationsen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectAlpha-pineneen_US
dc.subjectNatural zeoliteen_US
dc.subjectReaction kineticsen_US
dc.subjectCatalystsen_US
dc.subjectIsomerizationen_US
dc.titleIsomerization of alpha-pinene over acid treated natural zeoliteen_US
dc.typeArticleen_US
dc.authoridTR8568en_US
dc.institutionauthorÇakıcıoğlu Özkan, Seher Fehime-
dc.departmentİzmir Institute of Technology. Chemical Engineeringen_US
dc.identifier.volume192en_US
dc.identifier.issue1-3en_US
dc.identifier.startpage386en_US
dc.identifier.endpage404en_US
dc.identifier.wosWOS:000226534800010en_US
dc.identifier.scopus2-s2.0-11044227345en_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.identifier.doi10.1080/00986440590477773-
dc.relation.doi10.1080/00986440590477773en_US
dc.coverage.doi10.1080/00986440590477773en_US
dc.identifier.wosqualityQ3-
dc.identifier.scopusqualityQ2-
item.openairetypeArticle-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.fulltextWith Fulltext-
item.languageiso639-1en-
item.cerifentitytypePublications-
item.grantfulltextopen-
Appears in Collections:Chemical Engineering / Kimya Mühendisliği
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection
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