K2MgSiO4 : a novel K+-trapped biodiesel heterogeneous catalystproduced from serpentinite Mg3Si2O5(OH)4.
dc.contributor.author | Ballotin, Fabiane Carvalho | |
dc.contributor.author | Cibaka, Thérèse Ebambi | |
dc.contributor.author | Benfica, Tatiana Aparecida Ribeiro dos Santos | |
dc.contributor.author | Santos, Eleonice Moreira | |
dc.contributor.author | Teixeira, Ana Paula de Carvalho | |
dc.contributor.author | Lago, Rochel Montero | |
dc.date.accessioned | 2016-10-06T17:45:02Z | |
dc.date.available | 2016-10-06T17:45:02Z | |
dc.date.issued | 2016 | |
dc.description.abstract | In 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. | pt_BR |
dc.identifier.citation | BALLOTIN, F. C. K2MgSiO4: a novel K+-trapped biodiesel heterogeneous catalystproduced from serpentinite Mg3Si2O5(OH)4. Journal of Molecular Catalysis. A, Chemical, v. 422, p. 258-265, 2016. Disponível em: <http://www.sciencedirect.com/science/article/pii/S1381116916300395>. Acesso em: 26 set. 2016. | pt_BR |
dc.identifier.doi | https://doi.org/10.1016/j.molcata.2016.02.006 | |
dc.identifier.issn | 1381-1169 | |
dc.identifier.uri | http://www.repositorio.ufop.br/handle/123456789/7043 | |
dc.language.iso | en_US | pt_BR |
dc.rights | aberto | pt_BR |
dc.rights.license | O periódico Journal of Molecular Catalysis A: Chemical concede permissão para depósito deste artigo no Repositório Institucional da UFOP. Número da licença: 3963030240623. | pt_BR |
dc.subject | Serpentinite | pt_BR |
dc.subject | Biodiesel | pt_BR |
dc.title | K2MgSiO4 : a novel K+-trapped biodiesel heterogeneous catalystproduced from serpentinite Mg3Si2O5(OH)4. | pt_BR |
dc.type | Artigo publicado em periodico | pt_BR |
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