Natural Mg silicates with different structures and morphologies: reaction with K to produce K2MgSiO4 catalyst for biodiesel production

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dc.creatorFabiane Carvalho Ballotin
dc.creatorMayra Aparecida Nascimento
dc.creatorSara Silveira Vieira
dc.creatorAlexandre Carvalho Bertoli
dc.creatorOttavio Raul Domenico Riberti Carmignano
dc.creatorAna Paula de Carvalho Teixeira
dc.creatorRochel Montero Lago
dc.date.accessioned2023-07-26T12:42:39Z
dc.date.accessioned2025-09-09T01:33:28Z
dc.date.available2023-07-26T12:42:39Z
dc.date.issued2020
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
dc.description.sponsorshipFAPEMIG - Fundação de Amparo à Pesquisa do Estado de Minas Gerais
dc.description.sponsorshipCAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
dc.description.sponsorshipINCT – Instituto nacional de ciência e tecnologia (Antigo Instituto do Milênio)
dc.description.sponsorshipOutra Agência
dc.identifier.doihttps://doi.org/10.1007/s12613-019-1891-9
dc.identifier.issn1674-4799
dc.identifier.urihttps://hdl.handle.net/1843/56989
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofInternational Journal of Minerals, Metallurgy and Materials
dc.rightsAcesso Restrito
dc.subjectMinerais silicatados
dc.subjectTalco
dc.subjectCrisotila
dc.subjectBiodiesel
dc.subjectSilicatos
dc.subject.otherSilicate
dc.subject.otherSerpentinite
dc.subject.otherLizardite
dc.subject.otherAntigorite
dc.subject.otherTalc
dc.subject.otherChrysotile
dc.subject.otherBiodiesel
dc.titleNatural Mg silicates with different structures and morphologies: reaction with K to produce K2MgSiO4 catalyst for biodiesel production
dc.typeArtigo de periódico
local.citation.epage54
local.citation.issue1
local.citation.spage46
local.citation.volume27
local.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.
local.identifier.orcidhttps://orcid.org/0000-0002-3867-3257
local.identifier.orcidhttps://orcid.org/0000-0003-2872-6690
local.identifier.orcidhttps://orcid.org/0000-0003-0751-6221
local.identifier.orcidhttps://orcid.org/0000-0002-7375-2268
local.identifier.orcidhttps://orcid.org/0000-0002-9877-9192
local.identifier.orcidhttps://orcid.org/0000-0002-4985-7502
local.identifier.orcidhttps://orcid.org/0000-0002-7145-6342
local.publisher.countryBrasil
local.publisher.departmentICX - DEPARTAMENTO DE QUÍMICA
local.publisher.initialsUFMG
local.url.externahttps://link.springer.com/article/10.1007/s12613-019-1891-9#citeas

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