Isomerizaton of ?-pinene over H3PW12O40 catalysts supported on natural zeolite

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dc.contributor.authorAtalay B.
dc.contributor.authorGündüz G.
dc.date.accessioned2019-10-27T08:33:54Z
dc.date.available2019-10-27T08:33:54Z
dc.date.issued2011
dc.departmentEge Üniversitesien_US
dc.description.abstractThe liquid phase isomerization of ?-pinene over a catalyst with 12-tungstophosphoric acid (HPW) supported on natural zeolite rich in clinoptiolite was studied in a batch slurry reactor in a nitrogen atmosphere and at constant temperature of 373. K. The catalysts prepared were characterized by nitrogen adsorption, XRD, SEM, and DSC measurements. The catalytic activity increased from 15% to 99% with the introduction of HPW at 4.25. wt% onto the natural zeolite. However, the catalytic activity decreased with the calcination of the catalyst sample. XRD studies indicated that only the HPW catalyst supported on natural zeolite without calcination was the one where the HPW crystals were formed, no significant HPW crystals were observed in the calcined sample. The main reaction products of the isomerization reaction of ?-pinene were camphene and limonene with selectivities of about 40% and 3%, respectively, over the HPW catalyst supported on natural zeolite without heat treatment. One and a half order dependency on ?-pinene consumption was observed and activation energy was established to be 65.4. kJ/mol. © 2011 Elsevier B.V.en_US
dc.description.sponsorship01Müh029en_US
dc.description.sponsorshipFunding for this work from the Ege University Research Fund ( 01Müh029 ) is gratefully acknowledged. --en_US
dc.identifier.doi10.1016/j.cej.2011.02.037
dc.identifier.endpage1318en_US
dc.identifier.issn1385-8947
dc.identifier.issn1385-8947en_US
dc.identifier.issue3en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage1311en_US
dc.identifier.urihttps://doi.org/10.1016/j.cej.2011.02.037
dc.identifier.urihttps://hdl.handle.net/11454/26916
dc.identifier.volume168en_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.relation.ispartofChemical Engineering Journalen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subject?-pineneen_US
dc.subjectHeteropoly aciden_US
dc.subjectIsomerizationen_US
dc.subjectNatural zeoliteen_US
dc.titleIsomerizaton of ?-pinene over H3PW12O40 catalysts supported on natural zeoliteen_US
dc.typeArticleen_US

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