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dc.creatorPavlović, Stefan
dc.creatorMarinković, Dalibor
dc.creatorKostić, Milan
dc.creatorLončarević, Davor
dc.creatorMojović, Ljiljana
dc.creatorStanković, Miroslav
dc.creatorVeljković, Vlada B.
dc.date.accessioned2021-03-10T14:28:20Z
dc.date.available2021-03-10T14:28:20Z
dc.date.issued2021
dc.identifier.issn0016-2361
dc.identifier.urihttp://TechnoRep.tmf.bg.ac.rs/handle/123456789/4586
dc.description.abstractLignite coal fly ash (FA) from a domestic thermal power plant was converted into a pure cancrinite zeolitic material (ZMFA) using a novel, custom-made, rotating autoclave reactor system by a short-term alkali activation process. The obtained ZMFA was used as catalyst support of calcium oxide as an active component derived from waste chicken eggshells (ES). The ZMFA supported calcium oxide catalyst (xCaO/ZMFA) was synthesized by means of the ultrasound-assisted method. The influence of different concentrations of dispersed calcium oxide (x = 5–20 wt%) over ZMFA and thermal treatment at different temperatures (450–600 °C) were studied. The structural and morphological characterization showed that the original cancrinite structure was preserved. The basicity and textural properties indicated the presence of strong active sites in a well-defined pore network suitable for the reactions of bulky organic compounds such as triacylglycerols (TAGs). The highest activity (96.5% of fatty acid methyl esters) in the methanolysis of sunflower oil was achieved with the 20CaO/ZMFA catalyst under reaction conditions: temperature of 60 °C, methanol/oil molar ratio of 12:1, catalyst concentration of 4 wt%, and reaction time of 2 h. It was found that the optimal calcination temperature of the catalyst precursor was 550 °C. At calcination temperatures above 550 °C, the melting of the glassy phase became more intense whereby the molten phase partially reacted with calcium oxide forming the catalytically inactive calcium silicate compounds (wollastonite, larnite, etc.). The rate constants of the two tested kinetic models were correlated with the concentrations of active calcium oxide. The MRPD of both models was low indicating their reliability.en
dc.publisherElsevier
dc.relationinfo:eu-repo/grantAgreement/MESTD/Integrated and Interdisciplinary Research (IIR or III)/45001/RS//
dc.relationinfo:eu-repo/grantAgreement/MESTD/inst-2020/200026/RS//
dc.relationinfo:eu-repo/grantAgreement/MESTD/inst-2020/200133/RS//
dc.rightsopenAccess
dc.sourceFuel
dc.subjectlignite coal fly ashsr
dc.subjectcancrinitesr
dc.subjectchicken eggshellsr
dc.subjectUltrasound-assisted dispersionsr
dc.subjectSupported catalystsr
dc.subjectbiodieselsr
dc.titleThe chicken eggshell calcium oxide ultrasonically dispersed over lignite coal fly ash-based cancrinite zeolite support as a catalyst for biodiesel productionen
dc.typearticle
dc.rights.licenseARR
dc.citation.other289: 119912-
dc.citation.rankM21
dc.citation.spage119912
dc.citation.volume289
dc.identifier.doi10.1016/j.fuel.2020.119912
dc.identifier.fulltexthttp://TechnoRep.tmf.bg.ac.rs/bitstream/id/2113/4583.pdf
dc.identifier.scopus2-s2.0-85098673473
dc.identifier.wos000612062400006
dc.type.versionpublishedVersion


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