| 초록 |
Metal organic frameworks (MOFs), which consist of metal ions bridged by organic ligands, have proven their utility in carbon capture and utilization (CCU). MOFs constructed from natural/biological units (amino acids) are prospective candidates in CO2 chemistry owing to their natural origin and rich Lewis acid/base sites and functional groups. Herein, we report the catalytic efficiency of an amino acid-based Cu-containing MOF, denoted as CuTrp (Trp = L-tryptophan). The catalyst was characterized using various physicochemical techniques, including XRD, FT-IR, TGA, XPS, ICP-OES, FE-SEM, and BET analysis. The catalytic activity of CuTrp was assessed in the synthesis of cyclic carbonates from epoxides and CO2, and it was found that CuTrp operated in synergy with co-catalyst tetrabutylammonium bromide (TBAB) under solvent-free conditions. Several reaction parameters were studied to identify the optimum reaction conditions, and a reaction mechanism was proposed on the basis of experimental evidence and the previous literature. CuTrp also exhibited good stability in water and reusability for more than three times without severe loss of activity. |
