Influência da catálise ácida e básica na preparação da sílica funcionalizada pelo método sol-gel

dc.contributorUniversidade de Franca
dc.contributorUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T15:10:18Z
dc.date.available2014-05-20T15:10:18Z
dc.date.created2014-05-20T15:10:18Z
dc.date.issued2002-02-01
dc.identifierQuímica Nova. Sociedade Brasileira de Química, v. 25, n. 1, p. 27-31, 2002.
dc.identifier0100-4042
dc.identifierhttp://hdl.handle.net/11449/27576
dc.identifier10.1590/S0100-40422002000100006
dc.identifierS0100-40422002000100006
dc.identifierS0100-40422002000100006.pdf
dc.identifier2998503841917815
dc.identifier6446047463034654
dc.identifier0000-0003-3286-9440
dc.description.abstractSome aspects of the chemistry involved in the preparation and characterization of functionalized silicon oxide by sol-gel method are considered in this work. The synthesis was performed with different silicon alcoxide precursors and the influence of the acid and basic catalyst was investigated. Characterization was performed by infrared absorption spectroscopy, elemental analysis and 29Si NMR. Infrared data show Si-C and -CH2- vibrational modes at 1250 to 1280 and 2920 to 2940 cm-1, respectively. The elemental analysis confirmed the presence of organic groups in the inorganic silica network. 29Si NMR results show different hydrolisys depending on the acid or base catalysis.
dc.languagepor
dc.publisherSociedade Brasileira de Química
dc.relationQuímica Nova
dc.relation0.646
dc.relation0,255
dc.rightsAcesso aberto
dc.sourceSciELO
dc.subjectsol-gel
dc.subjectRMN 29Si and 13C
dc.subjectsilica
dc.titleInfluência da catálise ácida e básica na preparação da sílica funcionalizada pelo método sol-gel
dc.typeArtículos de revistas


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