High-Performance Polybenzimidazole Membranes for Helium Extraction from Natural Gas.

ABSTRACT: Increasing helium use in research and production processes necessitates separation techniques to secure sufficient supply of this noble gas. Energy-efficient helium production from natural gas is still a big challenge. Membrane gas separation technology could play an important role. Herein, a novel poly( p-phenylene benzobisimidazole) (PBDI) polymeric membrane for helium extraction from natural gas with low He abundance is reported. The membranes were fabricated by a facile interfacial polymerization at room temperature. The thin and defect-free membrane structure was manipulated by the confined polymerization of monomers diffusing through the interface between two immiscible liquids. Both He/CH₄ selectivity and He permeance are competitive over those of other commercial perfluo

SUBMITTER: Wang X 

PROVIDER: S-EPMC6556872 | biostudies-literature | 2019 Jun

REPOSITORIES: biostudies-literature