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چکیده
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In this work, SBA-15 was synthesized and further modified by (3-Iodopropyl)trimethoxysilane. Then the its surface was functionalized by 1-(1H-benzo[d]imidazol-2-yl)guanidine. Finally, palladium was immobilized on the surface of modified SBA-15 (SBA-15@BIG-Pd). In the second part, SBA-15@BIG-Pd catalyst was identified using ICP, XRD, TGA, BET, FT-IR, SEM, WDX, and EDS techniques. In the final part, SBA-15@BIG-Pd was used as a new, recoverable and practical nanocatalyst for Suzuki coupling reaction through the coupling of aryl halides with phenylboronic acid in PEG-400 as green solvent (Scheme 1). All products were synthesized with high TON, TOF and excellent yield (91-98℅) in short times (0.3-3 h), which shows the high efficiency of SBA-15@BIG-Pd. This catalyst can be reused five times without significant loss in its catalytic activity.
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