In this work, the effectiveness of metal-organic frameworks (MOFs) with sheet-like morphologies was assessed as function MOF microporosity and MOF-matrix compatibility. Zeolitic imidazolate (ZIFs, a subclass) sheet-like/platelet were incorporated in Matrimid/PBI matrices resulting mixed matrix membranes (MMMs). The ZIFs either permeable (ZIF-301) or impermeable (ZIF-95X) for gases kinetic diame...