Polymeric membrane materials for hydrogen separation
Contemporary membrane processes for separation of hydrogen from different industrial streams are based on use of polymeric membrane materials. The subject of this chapter is consideration of properties of various membrane materials in respect of hydrogen and other light gases. The effects of properties of gases, polymers, and conditions of separation on the gas permeation parameters are considered. Possible options for improvement of these parameters include crosslinking and introduction of nanoparticles into polymer matrices. The problem of separation of hydrogen isotopes is briefly discussed. The main message of this review is that many existing and widely applied hydrogen-separating membranes can be replaced by novel ones based on polymers with enhanced permeability and/ or selectivity.