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Please use this identifier to cite or link to this item: http://hdl.handle.net/1843/56989
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dc.creatorFabiane Carvalho Ballotinpt_BR
dc.creatorMayra Aparecida Nascimentopt_BR
dc.creatorSara Silveira Vieirapt_BR
dc.creatorAlexandre Carvalho Bertolipt_BR
dc.creatorOttavio Raul Domenico Riberti Carmignanopt_BR
dc.creatorAna Paula de Carvalho Teixeirapt_BR
dc.creatorRochel Montero Lagopt_BR
dc.date.accessioned2023-07-26T12:42:39Z-
dc.date.available2023-07-26T12:42:39Z-
dc.date.issued2020-
dc.citation.volume27pt_BR
dc.citation.issue1pt_BR
dc.citation.spage46pt_BR
dc.citation.epage54pt_BR
dc.identifier.doihttps://doi.org/10.1007/s12613-019-1891-9pt_BR
dc.identifier.issn1674-4799pt_BR
dc.identifier.urihttp://hdl.handle.net/1843/56989-
dc.description.resumo: In this work, different magnesium silicate mineral samples based on antigorite, lizardite, chrysotile (which have the same general for mula Mg3Si2O5(OH)4), and talc (Mg3Si4O10(OH)2) were reacted with KOH to prepare catalysts for biodiesel production. Simple impregnation with 20wt% K and treatment at 700–900°C led to a solid-state reaction to mainly form the K2MgSiO4 phase in all samples. These results indicate that the K ion can diffuse into the different Mg silicate structures and textures, likely through intercalation in the interlayer space of the different mineral samples followed by dehydroxylation and K2MgSiO4 formation. All the materials showed catalytic activity for the transesterification of soybean oil (1:6 of oil : methanol molar ratio, 5wt% of catalyst, 60°C). However, the best results were obtained for the antigorite and chrysotile precursors, which are discussed in terms of mineral structure and the more efficient formation of the active phase K2MgSiO4.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.description.sponsorshipINCT – Instituto nacional de ciência e tecnologia (Antigo Instituto do Milênio)pt_BR
dc.description.sponsorshipOutra Agênciapt_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.ispartofInternational Journal of Minerals, Metallurgy and Materialspt_BR
dc.rightsAcesso Restritopt_BR
dc.subjectSilicatept_BR
dc.subjectSerpentinitept_BR
dc.subjectLizarditept_BR
dc.subjectAntigoritept_BR
dc.subjectTalcpt_BR
dc.subjectChrysotilept_BR
dc.subjectBiodieselpt_BR
dc.subject.otherMinerais silicatadospt_BR
dc.subject.otherTalcopt_BR
dc.subject.otherCrisotilapt_BR
dc.subject.otherBiodieselpt_BR
dc.subject.otherSilicatospt_BR
dc.titleNatural Mg silicates with different structures and morphologies: reaction with K to produce K2MgSiO4 catalyst for biodiesel productionpt_BR
dc.typeArtigo de Periódicopt_BR
dc.url.externahttps://link.springer.com/article/10.1007/s12613-019-1891-9#citeaspt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-3867-3257pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0003-2872-6690pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0003-0751-6221pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-7375-2268pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-9877-9192pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-4985-7502pt_BR
dc.identifier.orcidhttps://orcid.org/0000-0002-7145-6342pt_BR
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