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DSC estimation of structural and textural parameters of SBA-15 silica using water probe |
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| Authors: | L. C. Cides da Silva G. L. B. Araújo N. R. Segismundo E. F. Moscardini L. P. Mercuri I. C. Cosentino M. C. A. Fantini J. R. Matos |
| Affiliation: | 1.Departamento de Química Fundamental, Instituto de Química,Universidade de S?o Paulo-USP,S?o Paulo,Brazil;2.Departamento de Farmácia, Faculdade de Ciências Farmacêuticas,Universidade de S?o Paulo-USP,S?o Paulo,Brazil;3.Departamento de Ciências Exates e da Terra,Universidade Federal de S?o Paulo-UNIFESP,S?o Paulo,Brazil;4.Departamento de Psicobiologia,Universidade Federal de S?o Paulo-UNIFESP,S?o Paulo,Brazil;5.Centro de Ciência e Tecnologia de Materiais,Instituto de Pesquisas Energéticas e Nucleares-IPEN,S?o Paulo,Brazil;6.Departamento de Física Aplicada, Instituto de Física,Universidade de S?o Paulo-USP,S?o Paulo,Brazil |
| Abstract: | The aim of this study was to use DSC and X-ray diffraction measurements to determine the pore size and pore wall thickness of highly ordered SBA-15 materials. The DSC curves showed two endothermic events during the heating cycle. These events were due to the presence of water inside and outside of mesopores. The results of pore radius, wall thickness and pore volume measurements were in good agreement with the results obtained by nitrogen adsorption measurement, XRD and transmission electron microscopy. |
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