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Please use this identifier to cite or link to this item: http://hdl.handle.net/1843/55831
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dc.creatorFabiane Carvalho Ballotinpt_BR
dc.creatorThérèse Cibaka Ebambipt_BR
dc.creatorTatiana Aparecida Ribeiro dos Santos Benficapt_BR
dc.creatorEleonice Moreira Santospt_BR
dc.creatorAna Paula de Carvalho Teixeirapt_BR
dc.creatorRochel Montero Lagopt_BR
dc.date.accessioned2023-07-05T18:18:27Z-
dc.date.available2023-07-05T18:18:27Z-
dc.date.issued2016-
dc.citation.volume422pt_BR
dc.citation.spage258pt_BR
dc.citation.epage265pt_BR
dc.identifier.doihttps://doi.org/10.1016/j.molcata.2016.02.006pt_BR
dc.identifier.issn1381-1169pt_BR
dc.identifier.urihttp://hdl.handle.net/1843/55831-
dc.description.resumoIn this study, a new catalyst for biodiesel synthesis, based on K2MgSiO4, was produced from the mineral serpentinite. TG, SEM, XRD, AA, BET analyses showed that serpentinite Mg3Si2O5(OH)4 impregnated with KOH (5,10 and 20 wt%), and thermally treated at 500 °C, 700 and 900 °C, can be converted to the main crystalline phase K2MgSiO4. Analyses by TPD-MS (CO2) and titration suggested the presence of weak/medium basic sites in relatively high concentrations. Biodiesel production using soybean oil (methanol:soybean oil ratio of 1:12, 1:9; 1:6, 60 °C) showed yields higher than 95% with catalyst at 10 wt%, which can be reused for three consecutive times without significant decrease on the reaction yield. The obtained results are discussed in terms of a new catalytic phase based on K+ ions trapped in the cavities of the MgSiO42− structure containing negatively charged oxygen basic sites.pt_BR
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológicopt_BR
dc.description.sponsorshipFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Geraispt_BR
dc.description.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superiorpt_BR
dc.languageengpt_BR
dc.publisherUniversidade Federal de Minas Geraispt_BR
dc.publisher.countryBrasilpt_BR
dc.publisher.departmentICX - DEPARTAMENTO DE QUÍMICApt_BR
dc.publisher.initialsUFMGpt_BR
dc.relation.ispartofJournal of Molecular Catalysis A: Chemicalpt_BR
dc.rightsAcesso Restritopt_BR
dc.subjectK2MgSiO4pt_BR
dc.subjectSerpentinitept_BR
dc.subjectBiodieselpt_BR
dc.subject.otherCatalise heterogeneapt_BR
dc.subject.otherBiodieselpt_BR
dc.titleK2MgSiO4: A novel K+-trapped biodiesel heterogeneous catalyst produced from serpentinite Mg3Si2O5(OH)4pt_BR
dc.typeArtigo de Periódicopt_BR
dc.url.externahttps://www.sciencedirect.com/science/article/pii/S1381116916300395pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-7145-6342pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-4985-7502pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0003-2872-6690pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0001-7929-0765pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0001-5915-6462pt_BR
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