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dc.creatorLukić, Ivana
dc.creatorKesic, Zeljka
dc.creatorMaksimovic, Svetolik
dc.creatorZdujić, Miodrag
dc.creatorLiu, Hui
dc.creatorKrstić, Jugoslav
dc.creatorSkala, Dejan
dc.date.accessioned2019-01-30T17:34:13Z
dc.date.available2019-01-30T17:34:13Z
dc.date.issued2013
dc.identifier.issn0016-2361
dc.identifier.urihttp://cer.ihtm.bg.ac.rs/handle/123456789/1180
dc.description.abstractThe kinetics of heterogeneous methanolysis of sunflower oil and used vegetable oil were studied at different temperatures, ranging from 60 to 96 degrees C using CaO center dot ZnO as catalyst (2 wt% on the basis of oil) and methanol to oil molar ratio of 10:1. Heterogeneous CaO center dot ZnO catalyst was synthesized by mechanochemical treatment of CaO and ZnO powder mixture with the addition of water necessary for the formation of corresponding mixed hydroxides, and their calcination at 700 degrees C in air. It was shown that kinetics of overall process could be described as pseudo-first order reaction. For the sunflower oil methanolysis at 60 and 70 degrees C, the rate of process at the beginning of biodiesel synthesis was limited by triglycerides mass transfer to the catalyst surface, and after that it is governed by the rate of chemical reaction at catalyst surface. At higher temperatures the influence of mass transfer resistance is almost negligible implying that the rate of chemical reaction determines the overall kinetic of biodiesel synthesis. In the case of used vegetable oil, the influence of mass transfer resistance was not observed either at higher or lower temperature. The kinetic model that describes the whole process well was proposed, and it comprises both the triglycerides mass transfer and chemical reaction controlled regime. The overall volumetric mass transfer coefficient was defined, assuming that it depends on the conversion of triglycerides.en
dc.publisherElsevier Sci Ltd, Oxford
dc.relationinfo:eu-repo/grantAgreement/MESTD/Integrated and Interdisciplinary Research (IIR or III)/45001/RS//
dc.rightsrestrictedAccess
dc.sourceFuel
dc.subjectBiodieselen
dc.subjectHeterogeneous catalysten
dc.subjectKineticsen
dc.subjectCaOen
dc.subjectZnOen
dc.titleKinetics of sunflower and used vegetable oil methanolysis catalyzed by CaO center dot ZnOen
dc.typearticle
dc.rights.licenseARR
dcterms.abstractМаксимовиц, Светолик; Скала, Дејан; Крстић, Југослав; Здујић, Миодраг; Лукић, Ивана; Кесиц, Зељка; Лиу, Хуи;
dc.citation.volume113
dc.citation.spage367
dc.citation.epage378
dc.citation.other113: 367-378
dc.citation.rankaM21
dc.identifier.doi10.1016/j.fuel.2013.05.093
dc.identifier.rcubConv_3030
dc.identifier.scopus2-s2.0-84879514881
dc.identifier.wos000323937300043
dc.type.versionpublishedVersion


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