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dc.contributor.CRUESPUNIVERSIDADE ESTADUAL DE CAMPINASpt_BR
dc.typeArtigopt_BR
dc.titlePhysico-chemical of organo-functionalized magnesium phyllosilicate prepared by microwave heatingpt_BR
dc.contributor.authorMoura, Karine O.pt_BR
dc.contributor.authorPastore, Heloise O.pt_BR
dc.subjectAquecimento por microondaspt_BR
dc.subjectFilossilicatos de magnésiopt_BR
dc.subjectSíntesept_BR
dc.subject.otherlanguageMicrowave heatingpt_BR
dc.subject.otherlanguageMagnesium phyllosilicatespt_BR
dc.subject.otherlanguageSynthesispt_BR
dc.description.abstractIn this work, organo-functionalized magnesium phyllosilicates were prepared via hydrothermal synthesis with four sources of silicon: 3-aminopropyltriethoxysilane (AMPTS), N[3-(trimethoxysilyl)propyl]-ethylenediamine (TMSPEDA), N-[3-(trimethoxysilyl)propyl]-diethylenetriamine (TMSPETA) and tetraethoxyorthosilane (TEOS). Microwave radiation (MW) was employed as heating source and the results were compared with the analogous materials synthesized by conventional heating in an oven (CE). The materials obtained were characterized using X-ray diffraction (XRD), Fourier transformed infrared spectroscopy (FTIR), solid state Si-29 and C-13 nuclear magnetic resonance (NMR), thermogravimetry (TG) and elemental analysis of carbon, nitrogen and hydrogen (CHN). The 2:1 type of trioctahedral phyllosilicate was confirmed by the presence of the 0601330 reflection, at 59.5 degrees 2 theta. The presence the organic modifier was proven by the bands at 2930, 2850, and 1490 cm(-1) and the typical features of the phyllosilicate were found at 3700 cm(-1) (Mg-OH) and 1014 cm(-1) (Si-O-Si). C-13-NMR showed that the organic chains were intact in the interlayer space (5-64 ppm). Thermogravimetry indicated that these pending groups were stable in this support until 200 degrees C when they begin to decompose. Silicon-29 NMR confirmed that the pending groups were bound directly to the silicon atoms by the resonance of Si-C bond at 48 and 55 ppm. The results showed the success of the procedure for all the proportions of the silicon sources used, with a reduction of reaction time in the range from 91% to 96% using microwave radiation in relation to the conventional heating oven. (C) 2014 Elsevier Inc. All rights reserved.pt
dc.description.abstractIn this work, organo-functionalized magnesium phyllosilicates were prepared via hydrothermal synthesis with four sources of silicon: 3-aminopropyltriethoxysilane (AMPTS), N-[3-(trimethoxysilyl)propyl]-ethylenediamine (TMSPEDA), N-[3-(trimethoxysilyl)propypt_BR
dc.relation.ispartofMicroporous and mesoporous materialspt_BR
dc.relation.ispartofabbreviationMicroporous mesoporous mat.pt_BR
dc.publisher.cityAmsterdampt_BR
dc.publisher.countryPaíses Baixospt_BR
dc.publisherElsevierpt_BR
dc.date.issued2014pt_BR
dc.date.monthofcirculationMaypt_BR
dc.identifier.citationMicroporous And Mesoporous Materials. Elsevier Science Bv, v. 190, n. 292, n. 300, 2014.pt_BR
dc.language.isoengpt_BR
dc.description.volume190pt_BR
dc.description.firstpage292pt_BR
dc.description.lastpage300pt_BR
dc.rightsfechadopt_BR
dc.sourceWeb of Sciencept_BR
dc.identifier.issn1387-1811pt_BR
dc.identifier.eissn1873-3093pt_BR
dc.identifier.doi10.1016/j.micromeso.2014.02.027pt_BR
dc.identifier.urlhttps://www.sciencedirect.com/science/article/pii/S1387181114000882pt_BR
dc.description.sponsorshipCONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO - CNPQpt_BR
dc.description.sponsorship1Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)pt_BR
dc.date.available2014-07-30T14:32:05Z
dc.date.available2015-11-26T17:41:54Z-
dc.date.accessioned2014-07-30T14:32:05Z
dc.date.accessioned2015-11-26T17:41:54Z-
dc.description.provenanceMade available in DSpace on 2014-07-30T14:32:05Z (GMT). No. of bitstreams: 0 Previous issue date: 2014. Added 1 bitstream(s) on 2021-01-06T12:27:21Z : No. of bitstreams: 1 000335102500038.pdf: 1209299 bytes, checksum: 8c4eb64ecda3e4da77d26e1c0fecf918 (MD5)en
dc.description.provenanceMade available in DSpace on 2015-11-26T17:41:54Z (GMT). No. of bitstreams: 0 Previous issue date: 2014en
dc.identifier.urihttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/59798
dc.identifier.urihttp://repositorio.unicamp.br/jspui/handle/REPOSIP/59798-
dc.subject.keywordConventional heatingpt_BR
dc.subject.keywordOrgano-phyllosilicatept_BR
dc.type.formArtigopt_BR
dc.description.sponsorNotePETROBRASpt_BR
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