| 초록 |
Metal-organic frameworks (MOFs) are porous crystalline materials with three-dimensional structure formed by coordinate covalent bonds between metal nodes and organic linkers. Chemical composition and structure are amendable by selection of nodes and linkers, which characterize some properties such as porosity, morphology, stability, and conductivity for specific applications. MOF-808 is a zirconium-based MOF and formed by bonds between Zr-SBU and 1,3,5-benzenetricarboxylate. Its structure contains two type of pores, tetrahedral cage of 4.8 Å and adamantane cage of 18.4 Å. In this study, MOF-808s were synthesized by solvothermal method, and their particle sizes were controlled by adjusting concentration of metal clusters and organic linkers in solution. Also, micron-sized granules were formed from spray drying of different sized MOF-808 particles. Spray drying is a method of producing a powder or granule from a liquid solution by rapidly drying with a hot gas. Granules with good cohesiveness are expected to be used as catalysts without a binder that degrades catalyst performances. MOF-808 granules were characterized by HR FE-SEM, HR TEM, XRD and BET. |
