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Influence of Synthesis Parameters in Obtaining KIT-6 Mesoporous Material

Laboratory of Catalysis, Environment and Materials, Department of Chemistry, State University of Rio Grande do Norte, Mossoró/RN 59610-090, Brazil
Author to whom correspondence should be addressed.
Appl. Sci. 2018, 8(5), 725;
Received: 16 April 2018 / Revised: 27 April 2018 / Accepted: 30 April 2018 / Published: 5 May 2018
(This article belongs to the Special Issue Nanoporous Materials and Their Applications)
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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 N2 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. View Full-Text
Keywords: mesoporous silica; KIT-6; synthesis parameters; cubic structure mesoporous silica; KIT-6; synthesis parameters; cubic structure

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Fernandes, F.R.D.; Pinto, F.G.H.S.; Lima, E.L.F.; Souza, L.D.; Caldeira, V.P.S.; Santos, A.G.D. Influence of Synthesis Parameters in Obtaining KIT-6 Mesoporous Material. Appl. Sci. 2018, 8, 725.

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