caa a22 4500 463193466 CHVBK 20180406164915.0 cr unu---uuuuu 170326e20070101xx s 000 0 eng 10.1007/s10973-005-7371-7 doi (NATIONALLICENCE)springer-10.1007/s10973-005-7371-7 Thermogravimetry applied to characterization of SBA-15 nanostructured material [Elektronische Daten] [Ana Coutinho, Solange Quintella, A. Araujo, Joana Barros, Anne Pedrosa, V. Fernandes Jr., M. Souza] Nanoporous silica with narrow pore size distribution has attracted increasing attention as a novel material for separations and reactions involving large molecules. SBA-15 has been synthesized in an acidic medium using a triblock copolymer as template. In this work, the SBA-15 was synthesized by the hydrothermal treatment at 373 K for 48 h, of a gel with the following overall molar composition: 1.0TEOS:0.017P123:5.7HCl:193H2O, where TEOS is tetraethyl orthosilicate and P123 is poly(ethylene oxide, propylene oxide and 1,4-dioxane). The obtained material was characterized by thermogravimetry, X-ray diffraction, infrared spectroscopy and BET surface area. A kinetic study using the model free model was accomplished in the stage of decomposition of the template (P123). The obtained value of the apparent activation energy was ca. 131 kJ mol-1. Springer-Verlag, 2007 model-free kinetics nationallicence SBA-5 nationallicence thermogravimetry nationallicence Coutinho Ana Department of Chemistry, Federal University of Rio Grande do Norte, 59078-970, Natal, RN, Brazil aut Quintella Solange Department of Chemistry, Federal University of Rio Grande do Norte, 59078-970, Natal, RN, Brazil aut Araujo A. Department of Chemistry, Federal University of Rio Grande do Norte, 59078-970, Natal, RN, Brazil aut Barros Joana Department of Chemistry, Federal University of Rio Grande do Norte, 59078-970, Natal, RN, Brazil aut Pedrosa Anne Department of Chemistry, Federal University of Rio Grande do Norte, 59078-970, Natal, RN, Brazil aut Fernandes Jr. V. Department of Chemistry, Federal University of Rio Grande do Norte, 59078-970, Natal, RN, Brazil aut Souza M. Department of Chemical Engineering, Federal University of Sergipe, 49.000-000, São Cristovão, SE, Brazil aut Journal of Thermal Analysis and Calorimetry Springer Netherlands 87/2(2007-01-01), 457-461 1388-6150 87:2<457 2007 87 10973 https://doi.org/10.1007/s10973-005-7371-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10973-005-7371-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Coutinho Ana Department of Chemistry, Federal University of Rio Grande do Norte, 59078-970, Natal, RN, Brazil aut NATIONALLICENCE 700 1- Quintella Solange Department of Chemistry, Federal University of Rio Grande do Norte, 59078-970, Natal, RN, Brazil aut NATIONALLICENCE 700 1- Araujo A. Department of Chemistry, Federal University of Rio Grande do Norte, 59078-970, Natal, RN, Brazil aut NATIONALLICENCE 700 1- Barros Joana Department of Chemistry, Federal University of Rio Grande do Norte, 59078-970, Natal, RN, Brazil aut NATIONALLICENCE 700 1- Pedrosa Anne Department of Chemistry, Federal University of Rio Grande do Norte, 59078-970, Natal, RN, Brazil aut NATIONALLICENCE 700 1- Fernandes Jr V. Department of Chemistry, Federal University of Rio Grande do Norte, 59078-970, Natal, RN, Brazil aut NATIONALLICENCE 700 1- Souza M. Department of Chemical Engineering, Federal University of Sergipe, 49.000-000, São Cristovão, SE, Brazil aut NATIONALLICENCE 773 0- Journal of Thermal Analysis and Calorimetry Springer Netherlands 87/2(2007-01-01), 457-461 1388-6150 87:2<457 2007 87 10973 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer