Membrane and membrane process have been considered as one of the most promising technologies for mitigating CO_2 emissions from the use of fossil fuels. In this paper, recent advances in polymeric membranes for CO_2 c...Membrane and membrane process have been considered as one of the most promising technologies for mitigating CO_2 emissions from the use of fossil fuels. In this paper, recent advances in polymeric membranes for CO_2 capture are reviewed in terms of material design and membrane formation. The selected polymeric materials are grouped based on their gas transport mechanisms, i.e., solution‐diffusion and facilitated transport. The discussion of solution‐diffusion membranes encompasses the recent efforts to shift the upper bound barrier, including the enhanced CO_2 solubility in several rubbery polymers and novel methods to construct shape-persisting macromolecules with unprecedented sieving ability. The carrier-bearing facilitated transport membranes are categorized based on the specific CO_2-carrier chemistry. Finally, opportunities and challenges in practical applications are also discussed, including post-combustion carbon capture(CO_2/N2), hydrogen purification(CO_2/H2), and natural gas sweetening(CO_2/CH4).展开更多
基金the U.S. Department of Energy/National Energy Technology Laboratory (DE-FE0026919)the Ohio Development Services Agency (OOE-CDO-D-13-05 and OER-CDO-D-15-09) for their financial support of this workpartly supported by the U.S. Department of Energy under Award Number DE-FE0026919 with substantial involvement of the National Energy Technology Laboratory,Pittsburgh, PA, USA
文摘Membrane and membrane process have been considered as one of the most promising technologies for mitigating CO_2 emissions from the use of fossil fuels. In this paper, recent advances in polymeric membranes for CO_2 capture are reviewed in terms of material design and membrane formation. The selected polymeric materials are grouped based on their gas transport mechanisms, i.e., solution‐diffusion and facilitated transport. The discussion of solution‐diffusion membranes encompasses the recent efforts to shift the upper bound barrier, including the enhanced CO_2 solubility in several rubbery polymers and novel methods to construct shape-persisting macromolecules with unprecedented sieving ability. The carrier-bearing facilitated transport membranes are categorized based on the specific CO_2-carrier chemistry. Finally, opportunities and challenges in practical applications are also discussed, including post-combustion carbon capture(CO_2/N2), hydrogen purification(CO_2/H2), and natural gas sweetening(CO_2/CH4).
