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A Review: Fundamental Aspects of Silicate Mesoporous Materials
Chemistry Department, P.O. Box 2455, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
Received: 15 October 2012; in revised form: 23 November 2012 / Accepted: 29 November 2012 / Published: 17 December 2012
Abstract: Silicate mesoporous materials have received widespread interest because of their potential applications as supports for catalysis, separation, selective adsorption, novel functional materials, and use as hosts to confine guest molecules, due to their extremely high surface areas combined with large and uniform pore sizes. Over time a constant demand has developed for larger pores with well-defined pore structures. Silicate materials, with well-defined pore sizes of about 2.0–10.0 nm, surpass the pore-size constraint (<2.0 nm) of microporous zeolites. They also possess extremely high surface areas (>700 m2 g−1) and narrow pore size distributions. Instead of using small organic molecules as templating compounds, as in the case of zeolites, long chain surfactant molecules were employed as the structure-directing agent during the synthesis of these highly ordered materials. The structure, composition, and pore size of these materials can be tailored during synthesis by variation of the reactant stoichiometry, the nature of the surfactant molecule, the auxiliary chemicals, the reaction conditions, or by post-synthesis functionalization techniques. This review focuses mainly on a concise overview of silicate mesoporous materials together with their applications. Perusal of the review will enable researchers to obtain succinct information about microporous and mesoporous materials.
Keywords: mesoporous materials; sol-gel; surfactants; catalyst
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Cite This Article
MDPI and ACS Style
ALOthman, Z.A. A Review: Fundamental Aspects of Silicate Mesoporous Materials. Materials 2012, 5, 2874-2902.
ALOthman ZA. A Review: Fundamental Aspects of Silicate Mesoporous Materials. Materials. 2012; 5(12):2874-2902.
ALOthman, Zeid A. 2012. "A Review: Fundamental Aspects of Silicate Mesoporous Materials." Materials 5, no. 12: 2874-2902.