K2MgSiO4 : a novel K+-trapped biodiesel heterogeneous catalystproduced from serpentinite Mg3Si2O5(OH)4.

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MetadadosDescriçãoIdioma
Autor(es): dc.creatorBallotin, Fabiane Carvalho-
Autor(es): dc.creatorCibaka, Thérèse Ebambi-
Autor(es): dc.creatorBenfica, Tatiana Aparecida Ribeiro dos Santos-
Autor(es): dc.creatorSantos, Eleonice Moreira-
Autor(es): dc.creatorTeixeira, Ana Paula de Carvalho-
Autor(es): dc.creatorLago, Rochel Montero-
Data de aceite: dc.date.accessioned2025-08-21T15:21:07Z-
Data de disponibilização: dc.date.available2025-08-21T15:21:07Z-
Data de envio: dc.date.issued2016-10-06-
Data de envio: dc.date.issued2016-10-06-
Data de envio: dc.date.issued2016-
Fonte completa do material: dc.identifierhttp://www.repositorio.ufop.br/handle/123456789/7043-
Fonte completa do material: dc.identifierhttps://doi.org/10.1016/j.molcata.2016.02.006-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1011478-
Descrição: dc.descriptionIn this study, a new catalyst for biodiesel synthesis, based on K2MgSiO4, was produced from the mineralserpentinite. TG, SEM, XRD, AA, BET analyses showed that serpentinite Mg3Si2O5(OH)4impregnated withKOH (5,10 and 20 wt%), and thermally treated at 500◦C, 700 and 900◦C, can be converted to the main crys-talline phase K2MgSiO4. Analyses by TPD-MS (CO2) and titration suggested the presence of weak/mediumbasic sites in relatively high concentrations. Biodiesel production using soybean oil (methanol:soybean oilratio of 1:12, 1:9; 1:6, 60◦C) showed yields higher than 95% with catalyst at 10 wt%, which can be reusedfor three consecutive times without significant decrease on the reaction yield. The obtained results arediscussed 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.-
Formato: dc.formatapplication/pdf-
Idioma: dc.languageen-
Direitos: dc.rightsaberto-
Direitos: dc.rightsO periódico Journal of Molecular Catalysis A: Chemical concede permissão para depósito deste artigo no Repositório Institucional da UFOP. Número da licença: 3963030240623.-
Palavras-chave: dc.subjectSerpentinite-
Palavras-chave: dc.subjectBiodiesel-
Título: dc.titleK2MgSiO4 : a novel K+-trapped biodiesel heterogeneous catalystproduced from serpentinite Mg3Si2O5(OH)4.-
Aparece nas coleções:Repositório Institucional - UFOP

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