K2MgSiO4: A novel K+-trapped biodiesel heterogeneous catalyst produced from serpentinite Mg3Si2O5(OH)4

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dc.creatorFabiane Carvalho Ballotin
dc.creatorThérèse Cibaka Ebambi
dc.creatorTatiana Aparecida Ribeiro dos Santos Benfica
dc.creatorEleonice Moreira Santos
dc.creatorAna Paula de Carvalho Teixeira
dc.creatorRochel Montero Lago
dc.date.accessioned2023-07-05T18:18:27Z
dc.date.accessioned2025-09-09T01:33:51Z
dc.date.available2023-07-05T18:18:27Z
dc.date.issued2016
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.identifier.doihttps://doi.org/10.1016/j.molcata.2016.02.006
dc.identifier.issn1381-1169
dc.identifier.urihttps://hdl.handle.net/1843/55831
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofJournal of Molecular Catalysis A: Chemical
dc.rightsAcesso Restrito
dc.subjectCatalise heterogenea
dc.subjectBiodiesel
dc.subject.otherK2MgSiO4
dc.subject.otherSerpentinite
dc.subject.otherBiodiesel
dc.titleK2MgSiO4: A novel K+-trapped biodiesel heterogeneous catalyst produced from serpentinite Mg3Si2O5(OH)4
dc.typeArtigo de periódico
local.citation.epage265
local.citation.spage258
local.citation.volume422
local.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.
local.identifier.orcidhttps://orcid.org/0000-0002-7145-6342
local.identifier.orcidhttps://orcid.org/0000-0002-4985-7502
local.identifier.orcidhttps://orcid.org/0000-0003-2872-6690
local.identifier.orcidhttps://orcid.org/0000-0001-7929-0765
local.identifier.orcidhttps://orcid.org/0000-0001-5915-6462
local.publisher.countryBrasil
local.publisher.departmentICX - DEPARTAMENTO DE QUÍMICA
local.publisher.initialsUFMG
local.url.externahttps://www.sciencedirect.com/science/article/pii/S1381116916300395

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