Hierarchical Multifunctional Ag + @Ni-BDC-NH 2 Nanosheet Catalyst for the One-Pot Synergistic Catalytic Synthesis of Cyclic Carbonates

Tandem catalysis can enhance the reaction efficiency and selectivity while reducing separation and purification steps, thus improving the development of “green chemistry”. The tandem synthesis of cyclic carbonates (CCs) from olefins and CO 2 is becoming one of the most promising strategies; however, designing a multifunctional catalyst with multiple sites and fast mass transfer channels to overcome mass transfer resistance at different sites remains a challenge. In this work, we controllably synthesized a bulk and nanosheet (NS) structure of Ni-BDC-NH 2 (Ni-BDC-NH 2 NS) via a solvent regulation strategy and successfully immobilized Ag + in Ni-BDC-NH 2 NS to form Ag + @Ni-BDC-NH 2 NS, which integrated highly exposed, synergistic acid (Ag + ) and base (−NH 2 ) active sites, along with rapid mass transfer channels. Benefiting from these synergistic effects and structural advantages, Ag + @Ni-BDC-NH 2 NS efficiently catalyzed one-pot synthesis of CCs from olefins and CO 2, achieving 99% conversion of styrene and 51% selectivity for styrene carbonate (SC) under optimal conditions, which was significantly higher than that of contrast catalysts lacking Ag + or –NH 2 (SC selectivity