Abstract
The development of mesoporous silicas containing organic functionality via templated sol-gel methodology has led to a great deal of interest, primarily as catalysts, but also in applications such as adsorbency.
It is possible to prepare materials with a mechanically stable silica backbone, with mesopores having narrow pore size distribution, and which can be coated with a wide range of functionality. They are promising adsorbents due to their controllable surface chemistry and their significant pore volumes.
We have also demonstrated that starch can be expanded to give a gel, which can be converted to a novel range of mesoporous carbons, with tuneable surface functionality, high surface area and good pore volume.
They display remarkable catalytic activity (for example, they can completely esterify succinic acid in aqueous environments). We believe that this unusual behaviour can be related to their adsorbency properties.
We present details of the properties of these materials, as well as preliminary results on their ability to adsorb a range of compounds.
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References
(a) J. H. Clark, D. J. Macquarrie, S. J. Tavener, The application of modified meso-porous silicas in liquid phase catalysis, Dalton Trans., 2006, 4297; (b) A. Stein, B. J. Melde, R. C. Schroden, Hybrid inorganic-organic mesoporous silicates: nanoscopic reactors coming of age, Adv. Mater., 12, 1403 (2000).
(a) D. J. Macquarrie, S. J. Tavener, M. A. Harmer, Novel mesoporous silica-perfluorosulfonic acids as strong Bronsted acid catalysts, Chem. Commun. 2363 (2005); (b) I. Diaz, C. Marques-Alvarez, F. Mohino, J. Perez-Pariente, E. Sastre, Combined alkyl and acid functionalised of MCM-41 silicas. Part 1 synthesis and characterisation and Part 2 Esterification of fatty acids with glycerol, J. Catal., 193, 283 and 295 (2000); (c) Y. Wan, J. Chen, D. Zhang, H. Li, Ullmann coupling reaction in aqueous conditions over the Ph-MCM-41 supported Pd catalyst, J. Mol. Catal., A, 258, 89 (2006).
M. H. Lim, A. Stein, Comparative studies of grafting and direct synthesis of inorganic-organic hybrid mesoporous materials, Chem. Mater., 11, 3285 (1999).
D. Brunel, A. Cauvel, F. di Renzo, F. Fajula, B. Fubini, B. Onida, E. Garrone, Preferential grafting of alkoxysilane coupling agents on the hydrophobic portion of the surface of micelle templated silica, New J. Chem., 24, 807 (2000).
T. Yokoi, H. Yoshitake, T. Tatsumi, Synthesis of amino-functionalised MCM-41 via direct co-condensation and post-synthetic grafting methods using mono-, di-, and triamino-organoalkoyssilanes, J. Mater. Chem., 14, 951 (2004).
D. J. Macquarrie, D. B. Jackson, B. L. King, A. Watson, Preparation of novel organic- inorganic hybrid micelle templated silicas. Comparison of different routes for preparation, Stud. Surf. Sci., Catal., 142, 1125 (2002).
W. Hu and D. J. Macquarrie, manuscript in preparation.
B. C. Pan, W. Du, W. M. Zhang, X. Zhang, Q. R. Zhang, B. J. Pan, L. Lv, Q. X. Zhang, J. L. Chen, Improved adsorption of 4-nitrophenol onto a novel hyper cross-linked polymer, Environ. Sci. Technol., 41, 5057 (2007).
V. Budarin, J. H. Clark, J. J. E. Hardy, R. Luque, K. Milkowski, S. J. Tavener, A. J. Wilson, Starbons: new starch-derived mesoporous carbonaceous materials with tunable properties, Angew. Chem. Int. Ed., 45, 3782 (2006).
(a) V. L. Budarin, J. H. Clark, R. Luque, D. J. Macquarrie, Versatile mesoporous carbo- naceous materials for acid catalysis, Chem. Comm., 634 (2007); (b) V. L. Budarin, J. H. Clark, R. A. Luque, D. J. Macquarrie, A. Koutinas, C. Webb, Tuneable mesoporous materials optimised for aqueous phase esterifications, Green Chem., 9, 992 (2007).
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Macquarrie, D.J., Hu, W. (2008). Synthesis of Sol-Gel and Gel-Based Materials and Their Use for Adsorption of Organics. In: Innocenzi, P., Zub, Y.L., Kessler, V.G. (eds) Sol-Gel Methods for Materials Processing. NATO Science for Peace and Security Series C: Environmental Security. Springer, Dordrecht. https://doi.org/10.1007/978-1-4020-8514-7_11
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DOI: https://doi.org/10.1007/978-1-4020-8514-7_11
Publisher Name: Springer, Dordrecht
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