Synthesis of Palladium Nanoparticles Encapsulated in Phosphine Ligand-Grafted Mesoporous Silicas and Their Application to Suzuki Cross-Coupling Reaction

Phosphine ligand-grafted mesoporous silica materials with large pores were prepared for the ligand-modified hete- rogeneous Pd nanocatalysts. New heterogeneous catalytic system was developed using palladium nanoparticles encapsulated in phosphine ligand-grafted mesoporous silica. The catalyst showed good catalytic activities for Suzuki cross-coupling using bro- mobenzene derivatives due to excellent phosphine ligand effects. Catalytic results showed nanoparticle catalysts can be recycled twice with decreased yields.

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