Please use this identifier to cite or link to this item: http://repository.eia.edu.co/handle/11190/103
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dc.creatorPabón, Elizabeth-
dc.creatorBorja-Ordóñez, S. M. (Sandra Milena)-
dc.creatorOrdóñez-Loza, J. (Javier)-
dc.creatorRamírez-Vélez, A. (Alejandro)-
dc.date.accessioned2013-10-25T21:45:36Z-
dc.date.available2013-10-25T21:45:36Z-
dc.date.created2013-06-
dc.date.issued2013-10-25-
dc.date.submitted2012-06-28-
dc.identifier.urihttp://hdl.handle.net/11190/103-
dc.descriptionSe prepararon óxidos mixtos de SiO2-TiO2 de diferente composición por el método sol-gel combinado con tratamiento hidrotérmico (TH), utilizando como precursores tetraetilortosilicato y tetraisopropóxido de titanio como fuente de silicio y titanio respectivamente. Los híbridos obtenidos usando el tensoactivo no iónico Triton X100, fueron sometidos a TH por 48 horas a 120 °C, a lavado, secado a 70 °C/24 h y calcinación a 550 °C/2 h (rampa de 1°C/min.). Los óxidos mixtos que se caracterizaron por fisisorción de nitrógeno, SEM, TEM, FTIR, DRX y TGA, presentan área específica alta, en el intervalo de 190-805 m2/g y diámetro promedio de poro de 4,0-6,5 nm además muestran la presencia de la fase anatasa deseable en reacciones fotocatalíticas.spa
dc.description.abstractMixed oxides SiO2-TiO2 were prepared of different compositions by the sol-gel method combined with hydro-thermal treatment (HT), using tetraethylorthosilicate and titanium tetraisopropoxide as precursors of the sources silica and titanium, respectively. Hybrids obtained using the nonionic surfactant Triton X100, were carried out with TH for 48 hours at 120 °C, washed, dried at 70 °C/24 h, and calcined at 550 °C/2 h (heating rate 1 °C/min.). The mixed oxides were characterized by nitrogen physisorption, SEM, TEM, FTIR, XRD and TGA. The results indicate that the materials presented high specific surface area in the range of 190-805 m2/g, average pore diameter 4,0- 6,5 nm, additionally, the silica-titania mixed oxides exhibits anatase phase desirable in photocatalytic reactions.spa
dc.format.extent10 p.spa
dc.language.isoesspa
dc.relation.ispartofRevista EIA-
dc.subject.lcshREI00209spa
dc.titleSíntesis y caracterización de óxidos mixtos de sílice-titania preparados por método sol-gel y tratamiento hidrotérmicospa
dc.title.alternativeSynthesis and characterization of silica-titania mixed oxides prepared by sol–gel method and hydrothermal treatmentspa
dc.title.alternativeSíntese e caracterização de óxidos mistos de sílice-titânia preparados pelo método sol-gel e tratamento hidrotérmico-
dc.typeArticlespa
dc.rights.accesRightsopenAccessspa
dc.creator.emailepabon@unal.edu.cospa
dc.creator.emailsborja@unal.edu.cospa
dc.creator.emailjordonez@unal.edu.cospa
dc.creator.emailaramirez@unal.edu.cospa
dc.date.accepted2013-02-21-
dc.identifier.bibliographicCitationPabón Geves, E., Borja Ordóñez, S. M., Ordóñez Loza, J., y Ramírez Vélez, A. (2013). Síntesis y caracterización de óxidos mixtos de sílice-titania preparados por método sol-gel y tratamiento hidrotérmico, Revista EIA, 10 (19), 123-132. doi: http://hdl.handle.net/11190/103spa
dc.identifier.idBiblioISSN 17941237spa
dc.publisher.editorFondo Editorial EIAspa
dc.relation.referencesAmlouk, Amel; El Mir, Lassaad; Kraiem, Samia and Alaya, Sahbi (2006). “Elaboration and characterization of TiO2 nanoparticles incorporated in SiO2 host matrix”. Journal of Physics and Chemistry of Solids, vol. 67, No. 7 (July), pp. 1464-1468.spa
dc.relation.referencesAntonietti, Markus (2001). “Surfactants for novel templating applications”. Current Opinion in Colloid & Interface Science, vol. 6, No. 3 (June), pp. 244-248.spa
dc.relation.referencesBarrera, María; Escobar, José; De los Reyes, José; Cortés, María A; Viniegra, Margarita y Hernández, A. (2006). “Effect of solvo-thermal treatment temperature on the properties of sol-gel ZrO2-TiO2 mixed oxides as HDS catalyst supports”. Catalysis Today, vol. 116, No. 4 (September), pp. 498-504.spa
dc.relation.referencesBrinker, C. Jeffrey and Scherer, George W. Sol- Gel Science: the physics and chemistr y of sol-gel processing. San Diego, USA: Academic Press Inc., 1990, 881p.spa
dc.relation.referencesElia, Andrés; Aispuro, Pablo; Quaranta, Nancy; Martín- Martínez, José Miguel; and Vázquez, Patricia (2011). “Synthesis and characterization of new silica-titania mixed oxides obtained by sol-gel technique”. Macromolecular Symposia, vol. 301, No. 1 (January), pp. 136-145.spa
dc.rights.licensePabón Geves, E., Borja Ordóñez, S. M., Ordóñez Loza, J., y Ramírez Vélez, A. (2013). Síntesis y caracterización de óxidos mixtos de sílice-titania preparados por método sol-gel y tratamiento hidrotérmico, Revista EIA, 10 (19), 123-132. doi:spa
dc.subject.eiaORGANIZACIÓN E INDUSTRIAspa
dc.subject.eiaORGANIZATION AND INDUSTRYspa
dc.subject.eurovocMATERIALES POROSOSspa
dc.subject.eurovocPOROUS MATERIALSspa
dc.subject.keywordsSIO2-TIO2spa
dc.subject.keywordsSOL - GELspa
dc.subject.keywordsTRATAMIENTO HIDROTÉRMICOspa
dc.subject.keywordsÓXIDOS MIXTOSspa
dc.subject.keywordsHYDROTHERMAL TREATMENTspa
dc.subject.keywordsMIXED OXIDESspa
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