Direct synthesis of organically modified Ti-SBA-15 materials

Adsorption and wetting characterization of hydrophobic SBA-15 silicas

“…Since this process was brought into focus [14,15] in 1996, the research in this area has been rapidly growing, for review see [16][17][18][19][20][21][22]. Preparation of SBA-15 through co-condensation of various hydrophobic silanes have been reported [23][24][25][26][27][28][29][30][31]. As compared to post-synthesis grafting, the direct synthesis approach is often credited with several advantages that include simplicity of the preparation, high organic loads, and homogeneous distribution of functionalities [16,18,19].…”

Poly(n‐alkylsilsesquioxane)s: Synthesis, characterization, and modification with poly(dimethylsiloxane)

“…These materials have remarkable tribological performance48, 50 and chemical stabilities, and they have been utilized in protective coatings against corrosion of aluminum,50 copper,49 and iron 48. The hydrolysis of these alkyltriethoxysilanes at the surface of oxides can make the oxides more hydrophobic,51 tailor the catalytic performance of organically modified molecular sieves,52 and improve the separation properties of ceramic membranes 53, 54. In spite of these technological applications, investigations of the structures of self‐supported polymeric films based on poly( n ‐alkylsilsesquioxanes) bearing long alkyl chains are relatively rare when compared with poly(phenylsilsesquioxanes), poly(methylsilsesquioxanes), and related materials.…”

Synthesis and characterization of SBA-15 materials functionalized with olefinic groups and subsequent modification through oxidation procedures

“…Besides, signals located at 15 and 65 ppm, attributed to the presence of surfactant, are also visible, indicating the efficiency of the surfactant extraction step is not complete. This could be related to the strong affinity between the hydrophobic olefinic functionality and the organic structure directing agent, which difficults the removal of the template as observed in other hybrid organic-inorganic SBA-15 type materials [33,34]. Nevertheless, butenyl-functionalized mesostructured SBA-15 materials, as in the case of vinyl functionalization, display good mesoscopic ordering, as it can be easily observed in HRTEM microphotographs (Fig.…”