Abstract
: The invention of mesoporous materials is of significant interest to many scientists worldwide. The Mobil Crystalline Materials No 41 (MCM-41) is a well-known mesoporous molecular sieve that was discovered in 1992 by a scientist at the Mobil Oil Corporation. The MCM-41 is widely used in catalysis, ion exchange, drug delivery, optics, gas sensing, and sorption. In this study, the surface of a mesoporous silica MCM-41, synthesized from pure silica, is functionalized with a methyl group by grafting. The synthesized and functionalized samples are characterized by X-ray powder diffractometer (XRD), and the functionalized sample are also characterized by Fourier transform infrared spectroscopy (FTIR). The textural properties of the samples are determined using N2 adsorption and desorption analysis. Thermal behaviors of the samples are analyzed using thermogravimetry (TG) and derivative thermogravimetry (DTG). The results of the analyses show that the functionalization of the synthesized material through grafting was accomplished with the surface area of the functionalized sample determined as 600.87 m2 g-1.
Highlights
The Mobil Crystalline Materials No 41 (MCM-41) is a member of the M41S family and was first discovered by researchers at the Mobil Research and Development Corporation in 1992 (Gaydhankar et al, 2006; Feil et al, 2009)
The diagrams show characteristic peaks of MCM-41, namely, a strong (100) reflection peak with two small peaks (110 and 200) resulted after functionalization. This result indicates that the regular structure of MCM-41 was preserved after functionalization
The FT-IR spectrum of MCM-41TMMS indicates whether a methyl group has been successfully grafted on the MCM-41 structure (AlOweini & El-Rassy, 2009)
Summary
The Mobil Crystalline Materials No 41 (MCM-41) is a member of the M41S family and was first discovered by researchers at the Mobil Research and Development Corporation in 1992 (Gaydhankar et al, 2006; Feil et al, 2009). Functionalization with organic and inorganic groups is carried out to improve the physical and chemical properties of mesoporous silica materials. These new organic-inorganic hybrid mesoporous silica structures have attracted attention due to their large surface areas, pore structures, and functionalized structures. Studies on using mesoporous silica modified with amine groups as adsorbents in CO2 adsorption are quite extensive (Belmabkhout et al, 2010; Builes & Vega, 2012; Gholami et al, 2016; Klinthong et al, 2013; Liu et al, 2015; Wang et al, 2015).
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