Shape-Controlled Synthesis of Melamine Based Polyamide Materials and Application in Suzuki-Miyaura Coupling Reaction

摘要

The shape of the supporters would influence the catalytic performance in Suzuki-Miyaura coupling reaction. To test the hypothesis, this study synthesized polyamides and their corresponding catalysts with different shapes by the template-assisted method using cheap and commercially available melamine and p-phthalic acid as raw materials. The samples were characterized by SEM, XPS, TEM, XRD, FT-IR, TGA and BET surface area and porosity analyzers. After detailed investigation of these polyamides with different shapes and their applications to catalytic reactions, it was established that these polyamides could be recyclable and efficient catalyst supporters towards Suzuki-Miyaura reactions. Supporters' shape influence the TOF (turnover frequency) value of the catalysts in Suzuki-Miyaura reaction and interaction between Pd active specie and supporters in the heterogeneous catalysts. Polyamides supported Pd catalysts exhibit excellent activity, selectivity and reusability in water medium.