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dc.creatorKesić, Željka
dc.creatorLukić, Ivana
dc.creatorZdujić, Miodrag
dc.creatorJovalekić, Čedomir
dc.creatorLiu, Hui
dc.creatorSkala, Dejan
dc.date.accessioned2018-07-25T13:12:50Z
dc.date.available2018-07-25T13:12:50Z
dc.date.issued2015
dc.identifier.issn1451-9372
dc.identifier.urihttp://dais.sanu.ac.rs/123456789/3542
dc.description.abstractThe goal of this study was to prepare a CaO·ZnO catalyst containing a small amount of K2CO3 and analyze its activity for biodiesel synthesis. The catalyst was prepared using the following procedure: CaO and ZnO (mole ratio of 1:2), water and K2CO3 (in various amounts) were mechanochemically treated and after milling heated at 700 °C in air atmosphere for obtaining mixed CaO·ZnO/xK2CO3 oxides (x = 0, 1, 2 and 4 mol of K2CO3 per 10 mol of CaO). All the samples were characterized by X-ray diffraction (XRD), inductively coupled plasma (ICP), X-ray photoelectron spectroscopy (XPS), thermogravimetric analysis (TGA), infrared spectroscopy (FTIR), scanning electron microscopy/energy-dispersive spectroscopy (SEM/EDS), particle size laser diffraction (PSLD) distribution, solubility measurement of Ca, Zn and K ions in methanol as well as by determination of their alkalinity (Hammett Indicator method). Prepared CaO·ZnO/xK2CO3 composite powders were tested as catalysts for methanolysis of sunflower oil at 70 °C using mole ratio of sunflower oil to methanol of 1:10 and with 2 mass% of catalyst based on oil weight. The presence of K2CO3 in prepared samples was found to increase the activity of catalyst, and that such effect is caused by homogeneous-heterogeneous catalysis of biodiesel synthesis. © 2015, CI and CEQ. All Rights Reserved.
dc.publisherBelgrade: Association of the Chemical Engineers of Serbia
dc.relationinfo:eu-repo/grantAgreement/MESTD/Integrated and Interdisciplinary Research (IIR or III)/45001/RS//
dc.rightsopenAccess
dc.sourceChemical Industry and Chemical Engineering Quarterly
dc.subjectbiodiesel synthesis
dc.subjectCaO
dc.subjectK2CO3
dc.subjectmechanochemical synthesis
dc.subjectmixed oxides
dc.subjectZnO
dc.titleMechanochemical synthesis of CaO·ZnO·K2CO3 catalyst: Characterization and activity for methanolysis of sunflower oil
dc.typearticleen
dc.rights.licenseBY-NC-ND
dcterms.abstractЈовалекић, Чедомир; Кесић, Жељка; Лукић, Ивана; Здујић, Миодраг; Лиу, Хуи; Скала, Дејан;
dc.citation.spage1
dc.citation.epage12
dc.citation.volume21
dc.citation.issue1
dc.identifier.wos000354755400001
dc.identifier.doi10.2298/CICEQ131026041K
dc.identifier.scopus2-s2.0-84946185788
dc.type.versionpublishedVersion
dc.identifier.fulltexthttp://dais.sanu.ac.rs/bitstream/handle/123456789/3542/Kesic_2015_Chemical-Industry-and-Chemical-Engineering-Quarterly_21_1.pdf


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