Challenge and promise of mixed matrix hollow fiber composite membranes for CO2 separations

New Copolymer Architecture for Mixed Matrix Membranes with High Loadings of ZIF-8 for Enhanced CO2 Permeability

“…34,36 Therefore, developing defect-free MMMs with high filler loadings and high permselective properties remains a great challenge for gas separation membranes. Different interesting strategies have recently been reviewed for addressing other important challenges for MMMs such as plasticization remediation, 57 MMM hollow fiber design, 58 and architecting better filler/ polymer interfaces 59 including developing connections between the filler and polymer for improved membrane properties. 60,61 Among the best polymeric materials reported for MOF-based MMMs for CO 2 separations, 16,18,20,31,32,34,35,37,39,42,43,62 glassy polymers like aromatic polyimides (Ultem, Matrimid 5218 and Matrimid 9725), polysulfones, or polymers with intrinsic porosity like PIM-1 have been most commonly used with properties strongly depending on the type of glassy polymer matrix.…”

“…Nevertheless, MMMs can still face important limitations like poor filler dispersion, leading to particle aggregation or sedimentation, and weak polymer/filler compatibility inducing interfacial voids, finally limiting the filler loadings. , Therefore, developing defect-free MMMs with high filler loadings and high permselective properties remains a great challenge for gas separation membranes. Different interesting strategies have recently been reviewed for addressing other important challenges for MMMs such as plasticization remediation, MMM hollow fiber design, and architecting better filler/polymer interfaces including developing connections between the filler and polymer for improved membrane properties. , …”

Biomass Based N/O Codoped Porous Carbons with Abundant Ultramicropores for Highly Selective CO2 Adsorption

“…Parallel to the massive consumption of fossil fuels, the continuous emissions of various air pollutants have led to global warming and resulted in a series of serious ecological issues. To alleviate these environmental problems, various technologies have been developed to inhibit CO 2 from releasing into the atmosphere, such as chemical absorption [1], physical absorption [2], membrane separation [3], cryogenic distillation [4] and others [5]. Among these technologies, physical absorption with the merits of a cost-effective process, including low equipment requirements, low power consumption and efficient regeneration [6,7], is considered one of the most competitive techniques to curb CO 2 emissions.…”