A hybrid ZIF-8/ZIF-62 glass membrane for gas separation

Abstract

Metal-organic framework (MOF) glasses have demonstrated great potential for high-performance separation. Herein a uniform hybrid MOF glass membrane was fabricated by using the liquid state of ZIF-62 to facilitate the melting of ZIF-8. The doping of ZIF-8 enhanced both the adsorption capacity as well as the ideal C₃H₆/C₃H₈ selectivity of ZIF-62 glass. As expected, the hybrid glass membrane exhibited good C₃H₆/C₃H₈ separation performance while preserving the CO₂ performance of the sole ZIF-62 membrane.