effect of ZIF-8 nanoparticles in mixed matrix membrane based polyurethane for CO2/CH4 gas separation

In this study polyurethane (PU) and Zeolitic Imidazolate Framework-8 (ZIF-8) were used as polymeric material and porous filler materials. ZIF-8 nanoparticles were synthesized and characterized by scanning electron microscopy (SEM), and thermal gravimetric analysis (TGA). In order to investigate the effect of ZIF-8 loading on the membrane performance in CO2/CH4 separation, different membranes were prepared with varying amounts of ZIF-8 (0-50 wt.%). Morphological, thermal and mechanical properties of the membranes were characterized by SEM, TGA, differential scanning calorimetry (DSC), X-ray diffraction (XRD) and tensile analysis. For studying the effect of feed pressure on CO2 and CH4 transport properties of the membranes, single gas experiments were conducted at 4, 8 and 12 bar feed pressures. Incorporation of ZIF-8 crystals into continuous PU matrix resulted in high performance gas separation membranes. Increasing feed pressure significantly increased separation performances of all the membranes

کلیدواژه ها:

Membrane gas separation ، Mixed matrix membrane ، Polyurethane ، Zeolitic Imidazolate Framework-8 (ZIF-8)