International Journal of Hydrogen Energy, Vol.45, No.34, 16965-16975, 2020
Development of hydrogen selective microporous PVDF membrane
Hydrogen is a sustainable clean and green energy source used to eliminate the problem of greenhouse effect. In the present work, the feasibility of gas permeability in separation of H-2 from CO2 and N-2 have been examined using polyvinylidene fluoride (PVDF) membranes synthesised in our laboratory by the phase inversion process. Effect of various non-solvent additives, such as lithium chloride (LiCl) and Tetraethoxysilane (TEOS) in the PVDF dope solution, have been studied. The resulted asymmetric flat sheet microporous hydrophobic membrane, shows higher hydrogen permeability and selectivity over other gases (CO2 & N-2). It has been observed that the MT5 membrane has shown the highest selectivity for hydrogen in comparison to CO2 and N-2. The highest value of selectivity was obtained as 4.8 and 3.7 in case of H-2/CO2 and H-2/N-2 respectively. The permeability of membrane has been obtained in the range of 2.3-4.2 mega barrer. SEM analysis is used for the investigation of membrane surface morphology. (C) 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.