Palladium Nanoparticles Supported on Ce-MOF-801 as Highly Efficient and Stable Heterogeneous Catalysts for Suzuki-Miyaura Coupling Reactions

Palladium nanoparticles (Pd NPs) supported on a cerium-based metal-organic framework Ce-MOF-801 (Pd/Ce-MOF-801) was prepared using an incipient wetness impregnation strategy. Multiple analytical techniques were used to investigate the physicochemical properties of Pd/Ce-MOF-801. Afterwards, its catalytic efficiency in the Suzuki-Miyaura cross-coupling reaction between different haloarenes and phenylboronic acid was assessed. The developed Pd/Ce-MOF-801 displayed a high catalytic performance at 318 K and in the presence of K2CO3 as well as aqueous ethanol (as a solvent), much superior to Pd/Ce-BTC as well as the analogs reported in the literature by comprehensively comparing the catalytic activity and the relationship between reaction temperature and catalyst dosage. Moreover, the catalyst exhibited negligible Pd species leaching and was capable of being recycled in eight successive runs without any decay in reactivity. Such protocol has the advantages of ambient reaction conditions and tolerance to various substrates with various functional groups. [GRAPHICS] .