Polymers of intrinsic microporosity for energy-intensive membrane-based gas separations

摘要: Abstract This review provides a new perspective on the role of state-of-the-art polymers intrinsic microporosity (PIMs) in key energy-intensive membrane-based gas separations including O2/N2, H2/N2, H2/CH4, CO2/CH4, H2S/CH4, C2H4/C2H6, and C3H6/C3H8 applications. A general overview separation properties novel PIM materials developed past 15 years is presented with updated performance maps latest pure-gas 2015 H2/CH4 permeability/selectivity upper bounds. Specifically, functionalized ladder PIMs polyimides (PIM-PIs) are discussed targeting at high-performance, plasticization-resistant membranes for demanding acid (CO2 H2S) removal from CH4 natural olefin/paraffin separations. Experimental CO2/CH4 data nearly 70 polymeric membrane available literature were gathered plotted first time Robeson plot, which mixed-gas 2018 bound was proposed to provide guidance future development. number have demonstrated outstanding performances separations, several shown great promises under realistic conditions. The potential their derivatives underexplored, significant efforts needed develop stable high-performance Ultimately, fabricating into defect-free, inexpensive, thin-film composite or integrally-skinned asymmetric paramount successful large-scale commercialization.