Hydrogen Separation using Co-doped MOF-5/Polyimide Mixed Matrix Membrane for Energy Application

Hydrogen is the most abundant element in the universe, can be produced by water, stored easily, conversed into thermal, mechanical and electrical energy so it can be considered as the energy carrier of the future due to these characteristics . Hydrogen separation using membrane method has the advantage over other separation methods in that it is less energy intensive and environmental friendly. In order to membrane properties become better and increase the performance of gas separation membranes, mixed matrix membranes (MMMs) have been developed. MOFs as a new fillers in MMM with high surface area and pore volume enhance the H2 gas separation properties. In this study, MOF-5 and Co-doped MOF-5 particles were synthesized, characterized and incorporated into polyimide to investigate the effect of filler on the H2 gas permeation. Co-doped MOF-5/PI MMMs with different loading rate (5wt.%, 10wt.%, 15wt.%) were fabricated. The characterization was performed by different analysis techniques. The gas analyses results showed that permeability of H2 gas in mixed matrix membrane including MOF-5 and Co-doped MOF-5 particules, enhanced with increasing the loading rate (5wt.%, 10wt.%, 15wt.%) at room temperature and pressure of 500 kPa. Furthermore, metal doped MOFs/PI is the highest gas permeation properties compared to pure PI and MOF-5/PI