Synthesis optimization of MCM-41 for CO2 adsorption using simplex-centroid design

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dc.contributor.authorMartinelli, Antonio Eduardo
dc.contributor.authorCosta, Cíntia de Castro
dc.contributor.authorMelo, Dulce Maria de Araújo
dc.contributor.authorMelo, Marcus Antônio de Freitas
dc.contributor.authorMedeiros, Rodolfo Luiz Bezerra de Araújo
dc.contributor.authorMarconi, João Andrade
dc.contributor.authorBarros, Joana Maria de Farias
dc.date.accessioned2021-09-14T13:31:00Z
dc.date.available2021-09-14T13:31:00Z
dc.date.issued2015-08
dc.description.resumoThere is a growing concern on the relationship between anthropogenic carbon dioxide and climate changes. A promising approach is the adsorption technology using mesoporous MCM-41 materials that can be easily synthesized to depict structures adequate to the flow of gas. The aim of this study was to improve the synthesis of MCM-41 using cationic surfactant mixtures and apply the resulting materials to CO 2 adsorption. To that end, the simplex-centroid design was applied to optimize CO2 adsorption from seven mesoporous MCM-41 materials synthesized by the hydrothermal method using surfactants from hydrophobic chains of different sizes. The cationic surfactants used were tetradecyltrimetylammonium bromide, cetyltrimethylammonium bromide, trimethyloctadecylammonium bromide and their mixture at ratios of 1:1 and 1:1:1. The CO 2 adsorption was investigated using thegravimetric method at 298 K and pressures up to 40 bar. The resulting materials, labelled C17, C19, C21, C17C19, C19C21, C17C21 and C17C19C21, were characterized by XRD, FTIR, TG and SEM and showed significant differences in structure as well as in the mass of CO2 adsorption. The response models showed that the best combination of the surfactants resulted from C 17C19 sample, which presented synergistic interactions reaching the highest value of CO2 adsorption (0.62 g CO2/g adsorbent), compared to other samplespt_BR
dc.identifier.citationCOSTA, Cíntia de Castro; MELO, Dulce Maria de Araújo; MARTINELLI, Antonio Eduardo; MELO, Marcus Antônio de Freitas; MEDEIROS, Rodolfo Luiz Bezerra de Araújo; MARCONI, João Andrade; BARROS, Joana Maria de Farias. Synthesis Optimization of MCM-41 for CO2 Adsorption Using Simplex-centroid Design. Materials Research, [S.L.], v. 18, n. 4, p. 714-722, ago. 2015. Disponível em: https://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392015000400714&lng=en&tlng=en. Acesso em: 01 fev. 2021. http://dx.doi.org/10.1590/1516-1439.017015.pt_BR
dc.identifier.doi10.1590/1516-1439.017015
dc.identifier.issn1980-5373
dc.identifier.urihttps://repositorio.ufrn.br/handle/123456789/33389
dc.languageenpt_BR
dc.publisherABM, ABC, ABPolpt_BR
dc.rightsAttribution 3.0 Brazil*
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/br/*
dc.subjectMCM-41pt_BR
dc.subjectCO2 adsorptionpt_BR
dc.subjectSimplex-centroidpt_BR
dc.subjectCetyltrimethylammonium bromidept_BR
dc.subjectTrimethyloctadecylammonium bromidept_BR
dc.subjectTetradecyltrimetylammonium bromidept_BR
dc.titleSynthesis optimization of MCM-41 for CO2 adsorption using simplex-centroid designpt_BR
dc.typearticlept_BR

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