Modification of SBA-۱۵ with cationic groups to support palladium (Pd), creating Pd@SBA-۱۵/ILDABCO, as a catalyst for Suzuki coupling reactions in aqueous media

The Suzuki reaction is a powerful cross-coupling process used to synthesize biaryls, essential in pharmaceuticals and materials science. Porous materials are crucial in catalysis because their high surface area and tunable pore structures provide efficient support and accessibility for catalytically active sites. The study reports, for the first time, the functionalization of SBA-۱۵ with double-charged DABCO using ۳-chloropropyltrimethoxysilane (CPTMS). This novel hybrid silica was then used to support palladium, resulting in the creation of an efficient Pd@SBA-۱۵/ILDABCO catalyst designed for biaryl synthesis via the Suzuki-Miyaura coupling reaction. Various characterization techniques —SEM, TEM, SEM-EDX, BET surface analysis, TGA, FT-IR, and ICP-AES —were employed to analyze the catalyst. In Suzuki-Miyaura coupling reactions, Pd@SBA-۱۵/ILDABCO achieved high yields in a short time at ۸۰ °C. Additionally, the catalyst demonstrated good recyclability over at least nine cycles with minimal activity loss, achieving a total turnover number (TON) of ۱۷۱۰.

کلیدواژه ها:

SBA-۱۵ ، Suzuki-Miyaura coupling ، Pd Ions ، Ionic liquid