日本ゼオライト学会　刊行物 Publication of Japan Zeolite Association

The organic functionalized mesoporous molecular sieves, MCM-41 or SBA-15, have received much attention in terms of the application of such materials in the fields of catalysis and adsorption. The organofunctional groups introduced by the common methods connected to the silica surface by Si–O–Si bonds. Hence they are easily leached by the hydrolysis in an aqueous solution. On the other hand, Si–C bonds have a good thermal and solvolytic stability as compared with Si–O–Si bonds on the surface of silica. One of the most effective and elegant methods for Si–C bond formation is the hydrosilylation reaction, because the hydrosilylation reaction can incorporate a wide range of functional groups by use of the corresponding alkenes.

We have investigated the Si–H bond formation onto the surface of MCM-41 by the reduction of a methoxylated MCM-41 and the functionalization of several alkyl and phenyl groups by hydrosilylation reactions with corresponding olefins. Furthermore, MCM-41 with phenethyl sulfonic acid functionalized MCM-41 was prepared by treatment of phenethyl group introduced to MCM-41 with conc. sulfuric acid. The characterization and stability of the resulting material were also investigated.