Preparation and characterization of mesoporous Titanium-silica and zirconia-silica mixed oxides
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Sociedad Mexicana de Ciencia y Tecnología de Superficies y Materiales A.C.
2006
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| author | R. G. Rodríguez Avendaño |
| author_facet | R. G. Rodríguez Avendaño |
| contents | Preparation and characterization of mesoporous Titanium-silica and zirconia-silica mixed oxides R. G. Rodríguez Avendaño J. A. Montoya T. Viveros J. A. De los Reyes Física, Astronomía y Matemáticas Titania Zirconia mixed oxides Modified Silica BET surface measurements An experimental strategy was developed to obtain mesoporous SiO2-ZrO2 and SiO2-TiO2 mixed oxides via the sol-gelprocess. SiO2-ZrO2 materials involved the use of tetraethylorthosilicate (TEOS) and an inorganic Zr-containing saltsource (nitrate). The ZrO2 content, the synthesis pressure on the solids properties were studied and further modification ofthis type of procedure. In the case of the SiO2-TiO2 materials were synthesized by a sol-gel method usingtetraethylorthosilicate (TEOS) and titanium isopropoxide, in a typical preparation. Both precursors were dried andcalcined at 500°C. The solids were characterized by nitrogen physisorption, pyridine chemisorption, 29Si NuclearMagnetic Resonance, SEM and X-ray diffraction. Characterization of the solids revealed that mesoporous materials withvery narrow pore diameter distribution were obtained when using the autoclave procedure from both mixed oxides.Surfaces areas and pore size distribution were a function of ZrO2 and TiO2 content. Differences in acidity as determinedby pyridine adsorption were observed depending on the synthesis parameters 2006 artículo científico 1665-3521 https://www.redalyc.org/articulo.oa?id=94219201 en http://www.redalyc.org/revista.oa?id=942 Superficies y vacío application/pdf Sociedad Mexicana de Ciencia y Tecnología de Superficies y Materiales A.C. Superficies y vacío (México) Num.2 Vol.19 |
| format | Artículo científico |
| id | redalyc_94219201 |
| institution | Redalyc |
| language | en |
| publishDate | 2006 |
| publisher | Sociedad Mexicana de Ciencia y Tecnología de Superficies y Materiales A.C. |
| spellingShingle | Preparation and characterization of mesoporous Titanium-silica and zirconia-silica mixed oxides R. G. Rodríguez Avendaño Física, Astronomía y Matemáticas Titania Zirconia mixed oxides Modified Silica BET surface measurements Preparation and characterization of mesoporous Titanium-silica and zirconia-silica mixed oxides R. G. Rodríguez Avendaño J. A. Montoya T. Viveros J. A. De los Reyes Física, Astronomía y Matemáticas Titania Zirconia mixed oxides Modified Silica BET surface measurements An experimental strategy was developed to obtain mesoporous SiO2-ZrO2 and SiO2-TiO2 mixed oxides via the sol-gelprocess. SiO2-ZrO2 materials involved the use of tetraethylorthosilicate (TEOS) and an inorganic Zr-containing saltsource (nitrate). The ZrO2 content, the synthesis pressure on the solids properties were studied and further modification ofthis type of procedure. In the case of the SiO2-TiO2 materials were synthesized by a sol-gel method usingtetraethylorthosilicate (TEOS) and titanium isopropoxide, in a typical preparation. Both precursors were dried andcalcined at 500°C. The solids were characterized by nitrogen physisorption, pyridine chemisorption, 29Si NuclearMagnetic Resonance, SEM and X-ray diffraction. Characterization of the solids revealed that mesoporous materials withvery narrow pore diameter distribution were obtained when using the autoclave procedure from both mixed oxides.Surfaces areas and pore size distribution were a function of ZrO2 and TiO2 content. Differences in acidity as determinedby pyridine adsorption were observed depending on the synthesis parameters 2006 artículo científico 1665-3521 https://www.redalyc.org/articulo.oa?id=94219201 en http://www.redalyc.org/revista.oa?id=942 Superficies y vacío application/pdf Sociedad Mexicana de Ciencia y Tecnología de Superficies y Materiales A.C. Superficies y vacío (México) Num.2 Vol.19 |
| title | Preparation and characterization of mesoporous Titanium-silica and zirconia-silica mixed oxides |
| topic | Física, Astronomía y Matemáticas Titania Zirconia mixed oxides Modified Silica BET surface measurements |
| url | https://www.redalyc.org/articulo.oa?id=94219201 |