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Mixed Matrix Membranes from a Microporous Polymer Blend and Nanosized Metal–Organic Frameworks with Exceptional CO2/N2 Separation Performance
journal contribution
posted on 2020-06-15, 19:38 authored by Patrick
F. Muldoon, Surendar R. Venna, David W. Gidley, James S. Baker, Lingxiang Zhu, Zi Tong, Fangming Xiang, David P. Hopkinson, Shouliang Yi, Ali K. Sekizkardes, Nathaniel L. RosiMost
examples of mixed-matrix membranes (MMMs) involve one type
of polymer and one type of inorganic filler particle. Here, both polymer
blending and MMM approaches are combined to form exceptional three-component
membranes for CO2/N2 separation. Nano-sized
amino-functionalized UiO-66 is added to a polymer blend of PIM-1 and
an ether side chain functionalized polyphosphazene (MEEP80) to create
a series of MMMs. Incorporation of UiO-66-NH2 particles
boosts the CO2 permeability of the PIM-1/MEEP80 (75:25)
blend from 3140 up to nearly 6000 Barrer, while maintaining its CO2/N2 selectivity within the range of 22–25,
placing it well above the 2008 Robeson upper bound. In addition, the
compatibility of the component parts leads to improved mechanical
flexibility and mitigated physical aging for more than 300 days. This
unique strategy constitutes a facile MMM formulation approach for
energy efficient carbon capture from flue gas.
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mixed-matrix membranesPIMMMM formulation approachether side chain functionalized polyphosphazeneNano-sized amino-functionalized UiO -66UiO -66-NH 2 particles boostsMicroporous Polymerfiller particle300 daysMEEPthree-component membranespolymer blendflue gasMixed Matrix Membranes2008 RobesonCO 2 permeabilitytypeMMM approaches6000 Barrercomponent parts
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