A highly permeable and selective amino-functionalized MOF CAU-1 membrane for CO2–N2 separation

Abstract

A thin tubular CAU-1 membrane of 2–3 μm exhibiting a high CO₂ permeance of up to 1.34 × 10⁻⁶ mol m⁻² s⁻¹ Pa⁻¹ and a CO₂–N₂ selectivity of 17.4–22.8 for CO₂–N₂ mixtures was achieved, demonstrating for the first time that amino-functionalized MOF membranes can provide high CO₂–N₂ selectivity and possess the potential for CO₂ capture from flue gas.