Assistant template and co-template agents in modeling mesoporous silicas and post-synthesizing organofunctionalizations

dc.creatorOliveira, VV
dc.creatorAiroldi, C
dc.date2012
dc.dateDEC
dc.date2014-07-30T13:51:11Z
dc.date2015-11-26T17:41:45Z
dc.date2014-07-30T13:51:11Z
dc.date2015-11-26T17:41:45Z
dc.date.accessioned2018-03-29T00:23:33Z
dc.date.available2018-03-29T00:23:33Z
dc.identifierJournal Of Solid State Chemistry. Academic Press Inc Elsevier Science, v. 196, n. 293, n. 300, 2012.
dc.identifier0022-4596
dc.identifierWOS:000310394500043
dc.identifier10.1016/j.jssc.2012.05.042
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/55027
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/55027
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1287097
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionMesoporous SBA-16 silicas were synthesized through a direct methodology using the template (F127) combined with co-templates (ethanol and n-butanol), with tetraethylorthosilicate as the silica source. These ordered mesoporous silica were characterized by elemental analyses, infrared spectroscopy, solid-state nuclear magnetic resonance for C-13 (CP/MAS) and Si-29 (HP/DEC) nuclei, nitrogen sorption/desorption processes, small angle X-ray analyses (SAXS) and transmission electron microscopy (TEM). SAXS and TEM results confirmed the space group Im3m and cubic 3D symmetry, typical for highly ordered SBA-16. The sorption/desorption data for SBA-16 and when functionalized gave type IV isotherms, with hysteresis loop H2. Surface areas of 836; 657 and 618 m(2) g(-1) and average pore diameters of 7.99; 8.10 and 9.85 nm, for SBA-16A, SBA-16B and SBA-16C were obtained, respectively. When functionalized the silicas presented a reduction in surface area, pore volume and pore diameter due to the pendant chains that interfere with nitrogen sorption in these measurements. The co-template ethanol favors the ordered mesopores with highest wall thicknesses. (C) 2012 Elsevier Inc. All rights reserved.
dc.description196
dc.description293
dc.description300
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.languageen
dc.publisherAcademic Press Inc Elsevier Science
dc.publisherSan Diego
dc.publisherEUA
dc.relationJournal Of Solid State Chemistry
dc.relationJ. Solid State Chem.
dc.rightsfechado
dc.rightshttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dc.sourceWeb of Science
dc.subjectSBA-16
dc.subjectTemplate
dc.subjectCo-template
dc.subjectFunctionalization
dc.subjectGrafting
dc.subjectButanol-water System
dc.subjectTriblock Copolymer
dc.subjectCatalytic-activity
dc.subjectFacile Synthesis
dc.subjectCations Removal
dc.subjectHybrid
dc.subjectSba-16
dc.subjectOrganosilicas
dc.subjectMorphology
dc.subjectDomain
dc.titleAssistant template and co-template agents in modeling mesoporous silicas and post-synthesizing organofunctionalizations
dc.typeArtículos de revistas


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