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Brominated sulfonated poly(2,6-diphenyl-1,4-phenylene oxide)(BSPPO_(dp)) was synthesized as a new membrane material for CO_2/N_2 separation.The 90%brominated-10%sulfonated PPO_(dp)(BSPPO_(dp)9010) was selected as representative material for membrane preparation.It formed flexible membranes with higher CO_2 permeability(P_(CO_2)= 58 Barrer) and selectivity (α_(CO_2/N_2) =36) than poly(2,6-dimethyl-1,4-phenylene oxide)(PPO_(dm)) membranes.BSPPO_(dp)9010 membranes containing silica nanoparticles enhanced CO_2 permeability while maintaining the CO_2/ N_2 selectivity as compared with the pure BSPPO_(dp)9010 membranes.The CO_2 permeability increased as a function of the silica content in the membrane.The separation mechanism for CO_2/N_2 in the membranes was attributed to the gas solubility effect rather than the gas diffusivity.
Brominated sulfonated poly (2,6-diphenyl-1,4-phenylene oxide) (BSPPO_ (dp)) was synthesized as a new membrane material for CO_2 / N_2 separation.The 90% brominated-10% sulfonated PPO_ (dp) 9010) was selected as a representative material for membrane preparation. It formed flexible membranes with higher CO_2 permeability (P_ (CO_2) = 58 Barrer) and selectivity (α_ (CO_2 / N_2) dimethyl-1,4-phenylene oxide (PPO_ (dm)) membranes.BSPPO_ (dp) 9010 membranes containing silica nanoparticles enhanced CO_2 permeability while maintaining the CO_2 / N_2 selectivity as compared to the pure BSPPO_ (dp) 9010 membranes.The CO_2 Pilophile as a function of the silica content in the membrane. The separation mechanism for CO 2 / N_2 in the membranes was attributed to the gas solubility effect rather than the gas diffusivity.