In the present work, modifications were made in the typical synthesis of KIT-6 mesoporous material. The molar ratio of P123 and its dissolution time, the type of alcohol, the aging time, and the heat treatment time were varied. The materials obtained were characterized by X-ray diffraction (XRD), thermogravimetry and differential thermogravimetry (TG/DTG), Fourier-transform infrared spectroscopy (FTIR), adsorption and desorption of N 2 and transmission electron microscopy (TEM). It was observed that the modifications interfered directly in the ordered structure of materials, displaying materials with cubic structures Ia3d (KIT-6 mesoporous material) and hexagonal structures P6mm, (SBA-15 mesoporous material). The type of alcohol probably acts on generation of the micelle, influencing the formation of the porous system and ordered structure. The results obtained indicate that the cubic structure of KIT-6 can be formed with a reduction of 30% in the P123 concentration, and decreases of 2, 6 and 12 h in times of P123 dissolution, aging and heat treatment, respectively. The modifications carried out in the synthesis procedure have resulted in ir being possible to employ materials with different characteristics, such as mesoscopic ordering and textural properties, in applications in the areas of catalysis and adsorption.
The mesoporous materials has received much attention due to their promising features in catalysis area, adsorption and ion exchange. Among these materials highlights the SBA-15 having a hexagonal structure, unidirectional, high thermal and hydrothermal stability and high average pore diameter. The synthesis of this material occurs in acidic medium using as organic P123 driver and TEOS as silica source. Despite using only an organic driver, other materials based on silica, such as KIT-6 using an alcohol such as codirecionador structure, reducing the aging time to 24 hours compared to SBA-15. This paper aims to synthesize the SBA-15 using Butanol (C 4 H 10 O) in the synthesis process in order to obtain a material in a shorter time and characterize it in order to evaluate the use of butanol synthesis through the materials obtained. Samples were synthesized according to Zhao et al. (1998) and using the modifications Butanol and characterized by XRD, TG / DTG, adsorption / desorption of nitrogen and SEM. The butanol synthesized material showed textural, structural and morphological characteristics similar to the standard sample, typical materials of SBA-15 type, even with a reduction of 24 hours of its synthesis. The materials synthesized with the use of alcohol, had thicker walls which gives the material a greater resistance. It was possible to shorten the synthesis of SBA-15 in 24 hours, yielding high quality materials, using Butanol during its synthesis.
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