CO/N Gas Separation Using Pebax/ZIF-7-PSf Composite Membranes.

In this study, we mixed the zeolitic imidazolate framework-7 (ZIF-7) with poly(ether-b-amide) 2533 (Pebax-2533) and used it as a selective layer for a composite membrane. We prepared the composite membrane's substrate using polysulfone (PSf), adjusted its pore size using polyethylene glycol (PEG), and applied polydimethylsiloxane (PDMS) to the gutter layer and the coating layer. Then, we investigated the membrane's properties of gases by penetrating a single gas (N, CO) into the membrane.