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Synthesis, characterization and catalytic properties of mesoporous MCM-41 molecular sieves

The recent discovery of novel mesoporous molecular sieves (designated as M41S) bas gained considerable attention owing to their potential applications in catalysis, separation processes, environmental pollution control and designing namstructured materials. They have not only broadened the scope of their diverse applications but also overcome some of the difficu1ties particularly the pore size restriction, encountered by the micro porous materials. Three main subgroups of M41 S family have been reported viz, unidimensional hexagonal MCM-41, three dimensional MCM-48 and thermally unstable lamellar MCM-50. Several attempts have been made for the isomorphous substitution of various metal ions for silicon in the mesoporous MCM-41 and to evaluate their catalytic performance. Much emphasis is given to the catalytic properties than understanding the catalyst (nature) aspect of these mesoporous materials. However, the extent of substitution and the quality of the samples I obtained remain a challenge to the scientific community and thus continued to be a subject of major research interest. More Info

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