Synthesis of Rice Husk Derived Activated Mesoporous Carbon Immobilized Palladium Hybrid Nano‐Catalyst for Ligand‐Free Mizoroki‐Heck/Suzuki/Sonogashira Cross‐Coupling Reactions. Issue 19 (20th May 2019) - Patel, Ashok Raj
Abstract: Chemically activated graphitic mesoporous carbon was synthesized from rice husk biomass and subsequently immobilized with palladium nanoparticles (Pd NPs). The physiochemical characteristics like composition, morphology, structure and textural properties of the rice husk derived activated carbon supported Pd NPs (nano‐Pd@RAGC) were analyzed by various analytical and spectroscopic techniques. Finally, the applications of hybrid nano‐Pd@RAGC material were investigated in useful carbon‐carbon bond forming reactions via Mizoroki‐Heck/Suzuki/Sonogashira cross‐coupling reactions under ligand‐free, microwave conditions. The RAGC provides excellent stability to Pd NPs in cross coupling reactions. The catalyst was recovered simply by filtration and recycled for at least ten times. Abstract : Biomass feedstock derived chemically activated mesoporous graphitic carbon supported palladium nanoparticle‐catalyzed Mizoroki‐Heck/Suzuki/Sonogashira cross‐coupling reactions under ligand‐free conditions using microwave irradiation.