Advanced microporous membranes for H₂/CH₄ separation: Challenges and perspectives

The utilization of hydrogen is regarded as the effective approach to arrive at the global carbon-neutrality target. Hydrogen/methane separation is a necessary unit for the hydrogen production in the petroleum industry. The development of high-performance membranes with high thermal, chemical and mechanical stabilities are an important issue for hydrogen membrane separation. This review provides an overview of current research on the process of membrane preparation and their separation performance toward H₂/CH₄ mixtures for the advanced microporous membranes that own high separation performance and high durability. Typical advanced microporous membranes including zeolite, metal organic framework, carbon-based and polymer-based microporous membranes were summarized for H₂/CH₄ separations. The current challenges and future perspectives towards the industrial application of advanced microporous membranes for H₂/CH₄ separation are outlined.