Pd complex anchored onto MCM-41 as efficient and reusable nanocatalyst for the Suzuki reaction

Zeolitic molecular sieves decorated with transition metals, mainly by the isomorphous substitution, had attracted great interest in redox catalysis because of their exceptional catalytic activity over various organic compounds [1–3]. Among them, because of the unique one-dimensional channel walls and better stability, synthesis and modifications in MCM-41 materials flourish more than in the other MCM-48 (cubic) and MCM-50 (lamellar) materials, as the former can enhance the reaction of sterically bulkier molecules by the suitable choice of surfactants/organic modifiers. Indeed, the greater flexibility of silica network enables the incorporation of various higher transition metals into the framework of MCM-41. In this work we have grafted 5-bromosalicylaldehyde ligand with palladium acetate salt onto MCM-41 successfully and the catalyst was analyzed by a series of characterization techniques such as. FT-IR, TEM. BET, SEM and TGA and it was applied as a heterogeneous catalyst for the formation of C-C bond from arylhalides and boronic acid (Figure