| 초록 |
The metal organic framework (MOF) is highly porous and has flexible structure. Through their intrinsic properties, MOF can be applied in the field of separation. In this work, Magnesium-MOF-74 (Mg-MOF-74) is used as adsorbent material. The Mg-MOF-74 has one-dimensional channel with pore diameter around 1.1nm. Its pore size is too large to separate light hydrocarbon molecules. 2,4,6-Tri(4-pyridyl)-1,3,5-triazine (tpt) can be partitioned into the pore of Mg-MOF-74, through the interaction between the lone pair electron of nitrogen atom of tpt ligand and open metal site of magnesium. Ligand partitioned Mg-MOF-74 will be characterized through Powder X-ray Diffraction (PXRD) and Mass sperctroscopy (MS) method. The 77K N2 adsorption isotherm data analysis are used to characterize the pore structure of pristine Mg-MOF-74 with ligand inserted Mg-MOF-74. In order to test the kinetic separation performance of ethane (C2) and propane (C3) gas, pressure decaying curve is obtained and analyzed through several apparatus. Diffusivity of C2 and C3 gas will be calculated by Fickian diffusion model. Diffusion selectivity and sorption selectivity will be calculated based on the data. |
