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Enhanced transesterification reaction using chromium-doped calcium oxide-based catalyst supported on alumina and its specification of biodiesel

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dc.citedby8
dc.contributor.authorSulaiman N.F.en_US
dc.contributor.authorLeong Y.W.en_US
dc.contributor.authorLee S.L.en_US
dc.contributor.authorToemen S.en_US
dc.contributor.authorBakar W.A.W.A.en_US
dc.contributor.authorid57215633057en_US
dc.contributor.authorid58510406700en_US
dc.contributor.authorid57193482292en_US
dc.contributor.authorid54685490100en_US
dc.contributor.authorid6506416179en_US
dc.date.accessioned2024-10-14T03:17:43Z
dc.date.available2024-10-14T03:17:43Z
dc.date.issued2023
dc.description.abstractA new modification with an active substance, chromium-doped calcium oxide-based catalyst supported on alumina (Cr-Ca/?-Al2O3), was synthesized by the wetness impregnation method in the transesterification of refined waste cooking oil. 10Cr-90Ca/?-Al2O3 catalyst calcined at 700 �C was successful in achieving a maximum of 86.6% of biodiesel production under optimum parameters (reaction temperature of 65 �C, catalyst loading of 6 wt%, oil-to-methanol of 1:18 mol ratio, and reaction time of three hours). The optimization using 10Cr-90Ca/?-Al2O3 catalyzed reaction was subsequently verified by response surface methodology. Based on the R2 value of 0.9977, the regression equation fits well and explains a significant response to the observed variability. The analyses from X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and transmission electron microscopy (TEM) indicated that the active species existence in 10Cr-90Ca/?-Al2O3 catalysts was Ca2+ and Cr3+ played important roles in this catalytic transesterification reaction for biodiesel production. The 10Cr-90Ca/?-Al2O3 catalyst calcined at 700 �C had the smallest crystallite size measured at 9.4 nm (Al2O3), 8.9 nm (CaO), and 17.9 nm (Cr2O3). The TGA-DTA data validated the temperature of 700 �C was considered suitable for synthesized 10Cr-90Ca/?-Al2O3 catalyst. The fuel qualities of synthesized biodiesel under ideal process conditions meet ASTM D6751 and EN 14214 standards. � 2023 Elsevier Ltden_US
dc.description.natureFinalen_US
dc.identifier.ArtNo117556
dc.identifier.doi10.1016/j.enconman.2023.117556
dc.identifier.scopus2-s2.0-85169009207
dc.identifier.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85169009207&doi=10.1016%2fj.enconman.2023.117556&partnerID=40&md5=8c2eb9d6fb598f15d5dc106b8d42905a
dc.identifier.urihttps://irepository.uniten.edu.my/handle/123456789/34033
dc.identifier.volume293
dc.publisherElsevier Ltden_US
dc.sourceScopus
dc.sourcetitleEnergy Conversion and Management
dc.subjectBox-Behnken design
dc.subjectChromium-doped
dc.subjectRefined waste cooking oil
dc.subjectRenewable energy
dc.subjectSpecification of biodiesel
dc.subjectAlumina
dc.subjectAluminum oxide
dc.subjectCalcination
dc.subjectCatalyst supports
dc.subjectChromium compounds
dc.subjectCrystallite size
dc.subjectHigh resolution transmission electron microscopy
dc.subjectLime
dc.subjectMagnesia
dc.subjectOils and fats
dc.subjectPetroleum refining
dc.subjectSpecifications
dc.subjectTransesterification
dc.subjectX ray photoelectron spectroscopy
dc.subjectBiodiesel production
dc.subjectBox-Behnken design
dc.subjectChromium-doped
dc.subjectRefined waste cooking oil
dc.subjectRenewable energies
dc.subjectSpecification of biodiesel
dc.subjectSynthesised
dc.subjectTransesterification reaction
dc.subjectWaste cooking oil
dc.subject]+ catalyst
dc.subjectBiodiesel
dc.titleEnhanced transesterification reaction using chromium-doped calcium oxide-based catalyst supported on alumina and its specification of biodieselen_US
dc.typeArticleen_US
dspace.entity.typePublication
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