Preparation of self-supported crystalline merlinoite-type zeolite W membranes through vacuum filtration and crystallization for CO2/CH4 separations

Zeolite W membranes were grown on their seed pellets prepared via a straightforward vacuum filtration method followed by crystallization, rendering them self-supported.

Continuous polycrystalline ZIF-8 membrane supported on CO2-selective mixed matrix supports for CO2/CH4 separation

Thin and compact ZIF-8 membranes were successfully synthesized on PES-ZIF-8 mixed matrix supports. Incorporating both selective ZIF-8 layer and PES-ZIF-8 mixed matrix support in a membrane has enhanced the overall CO₂/CH₄ selectivity.

An enhanced hybrid membrane of ZIF-8 and zeolite T for CO2/CH4 separation

Vacuum thermal seeding was performed to synthesize the ZIF-8 membrane, followed by fabrication of zeolite T on the ZIF-8 layer. The synergistic effect of both materials on the gas separation mechanism has resulted in high CO₂/CH₄ selectivity.

An overview: synthesis of thin films/membranes of metal organic frameworks and its gas separation performances

Metal organic frameworks (MOFs), an emerging class of porous solid materials, have developed into a constructive research field with intense research interests mainly in the field of materials science and chemistry.