Synthesis of Aluminum SBA-16 Mesoporous Material Using Ultrasonic Treatment

S. B. Shete, U. D. Joshi

Abstract: Mesoporous molecular sieves in the hexagonal phase (SBA16) are synthesized Tetraethylarthosilicate (TEOS) solutions using Pluronic F127 as template. TEOS as silica source. It is effectively transformed into mesoporous materials depending upon the hydrothermal conditions. It is also found that a high concentration of Na+ ions is not critical in the formation of SBA16 when prepared under controlled pH of gel, calcinations temperature and calcinations duration conditions. We provide direct evidence of SBA16. Our results resemble that coal combustion byproducts can be utilized for producing mesoporous molecular sieves even if containing significant amounts of impurities. The highest crystalline and well defined phase purity SBA16 is obtained without hydrothermal treatment in short interval of time. X-ray diffraction (XRD) shows that the highly ordered esostructure was maintained even at the high loading of aluminum up to5.5 (bulk molar ratio SiO2/Al2O3). The synthesis of mesoporousAl2O3-containing SBA-16 composite with a cubicIm3m structure will open new applications for catalysts

Keywords: Hydrothermal synthesis; Pluronic 127, Tetraethylarthosilicate (TEOS), SBA-16, Si/Al ratio