Polymeric CO2/N2 gas separation membranes for the capture of carbon dioxide from power plant flue gases

Synthesis and characterization of bis (4-maleimidophenyl) fluorene and its semi interpenetrating network membranes with polyether imide (Ultem® 1000)

“…Membrane technology is emerging as an alternative to conventional absorption, adsorption, and cryogenic distillation techniques [1][2][3][4]. Although membrane based gas separations are already commercialized in a few specific applications, their use in CO 2 separations is not as prevalent.…”

“…The permeability, and in turn the selectivity, of the material is often expressed as a product of diffusivity and solubility [4]. In general, the rigid engineering polymers exhibit higher diffusivity selectivity [3]. Hence, numerous authors have reported varying the intrinsic free volume in the polymers by incorporating bulky groups in the polymer chain [3].…”

“…In general, the rigid engineering polymers exhibit higher diffusivity selectivity [3]. Hence, numerous authors have reported varying the intrinsic free volume in the polymers by incorporating bulky groups in the polymer chain [3]. Recently, "Cardo groups", which are non-planar aromatic bulky groups have been of increasing interest in polymeric membrane materials [5][6][7][8][9][10][11][12].…”

Separation performance of asymmetric membranes based on PEGDa/PEI semi-interpenetrating polymer network in pure and binary gas mixtures of CO2, N2 and CH4

“…Apart from CO 2 capture and sequestration, the increasing demand for natural gas warrants economical methods for natural gas sweetening [1][2][3][4]. Industrial flue gases and raw natural gas contain significant amounts of CO 2 .…”

“…It is mandatory to remove the CO 2 from other gas mixtures to either meet the upcoming strict environmental regulations or to meet pipeline specifications [5]. The separation of CO 2 from gas mixtures is usually achieved by absorption, adsorption, and cryogenic distillation techniques [1][2][3][4]. The economical advantages along with lower maintenance and space requirements are making membrane technology a popular choice for gas separations [1][2][3][4].…”