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SOL-GEL LA2O3-ZRO2 MIXED OXIDE CATALYSTS FOR BIODIESEL PRODUCTION

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dc.creatorDANIELA ALEJANDRA SALINAS ULLOA
dc.date2018
dc.date.accessioned2025-01-10T14:57:47Z
dc.date.available2025-01-10T14:57:47Z
dc.date.issued2018
dc.description.abstractDIFFERENT LA2O3 CONTENTS (0, 1, 2, 3, AND 5 WT%) WERE USED TO PREPARED LA2O3-ZRO2 MIXED OXIDES CALCINED AT 600 DEGREES C BY THE SOL-GEL METHOD. THE CATALYTIC ACTIVITY WAS MEASURED AS BIODIESEL PRODUCTION FROM CANOLA OIL THROUGH A TRANSESTERIFICATION REACTION. THE CHARACTERIZATION RESULTS INDICATE THAT THE LA2O3 MONOLAYER FORMATION AND EXTENT OF BASICITY OF M-ZRO2 HAVE A LARGE INFLUENCE ON BIODIESEL PRODUCTION. GREATER BIODIESEL CONVERSION (56% AT 4 H) WAS OBTAINED WITH THE 3% LA2O3-ZRO2 CATALYST IN THE PRESENCE OF BASIC SITES AND THE FORMATION OF A MONOLAYER OF LA2O3. THE DECREASE IN THE CATALYTIC ACTIVITY FOR 5% LA2O3-ZRO2 RESULTED FROM THE LOSS OF ACTIVE SITES ON THE CATALYST BECAUSE OF AGGLOMERATION, WHICH WAS SUGGESTED BY XPS AND THE ISOELECTRIC POINT. THE KINETIC DATA FIT TO A PSEUDO-FIRST ORDER CONSTANT, AND THE LARGEST KINETIC CONSTANT CORRESPONDS TO 3% LA2O3-ZRO2, CURRENTLY THE LARGEST HETEROGENEOUS NON-ALKALINE METAL CATALYST REPORTED FOR A TRANSESTERIFICATION REACTION. (C) 2017 SCIENCE PRESS AND DALIAN INSTITUTE OF CHEMICAL PHYSICS, CHINESE ACADEMY OF SCIENCES. PUBLISHED BY ELSEVIER B.V. AND SCIENCE PRESS. ALL RIGHTS RESERVED.
dc.formatapplication/pdf
dc.identifier.doi10.1016/j.jechem.2017.11.003
dc.identifier.issn2095-4956
dc.identifier.urihttps://repositorio.ubiobio.cl/handle/123456789/9762
dc.languagespa
dc.publisherJournal of Energy Chemistry
dc.relation.uri10.1016/j.jechem.2017.11.003
dc.rightsPUBLICADA
dc.titleSOL-GEL LA2O3-ZRO2 MIXED OXIDE CATALYSTS FOR BIODIESEL PRODUCTION
dc.typeARTÍCULO
dspace.entity.typePublication
ubb.EstadoPUBLICADA
ubb.Otra ReparticionDEPARTAMENTO DE QUIMICA
ubb.SedeCONCEPCIÓN
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