Metal-organic frameworks (MOFs) are crystalline nanoporous materials. We identify promising ultramicroporous (d < 0.6 nm) MOFs for membrane gas separations (CO2/N2, CO2/CH4, and H2/CO2) as well as membrane pervaporation (alcohol dehydration and IPA purification). We investigate the effects of topology, surface functionality, and framework flexibility of MOFs on the mass transport properties. We also develop new method for the fabrication of pure MOF membranes.
We developed scalable wet deposition techniques for the fabrication of pure zeolite membranes for the gas separations and pervaporation. We explore new techniques for characterizing and repairing defects in pure zeolite membranes. We collaborate with computational groups to gain molecular-level understanding on the mass transport in zeolite membranes.