Intensification of O2/N2 separation by novel magnetically aligned carbonyl iron powders /polysulfone magnetic mixed matrix membranes

Switching gas permeation through smart membranes by external stimuli: a review

“…stimuli can switch. Polymers can change their physicochemical properties upon external stimuli like electrical, [22][23][24]30,31,33 light, 25,26,32,[34][35][36][37][38][39][40][41] pressure, [44][45][46] thermal, 27,42,43 magnetic eld, 28 and humidity. 29 As in Fig.…”

“…Raveshiyan et al reported novel magnetic mixed matrix membranes (MMMs) that were developed using polysulfone (PSf) containing carbonyl iron powders (CIPs) for O 2 /N 2 separation. 28 Fig. 10a shows a schematic illustration of the magnetic gas separation mechanism.…”

“…Inspired by cell membranes with a stimuli-responsive channel for self-regulating permeability and selectivity in response to environmental signals, [57][58][59] switching the selectivity of gas transport through a membrane by external stimuli is highly desired in chemical engineering. There are rst attempts to develop smart interactive membrane that can be switched by external stimuli like electrical voltage, [22][23][24]30,31,33 photo, 25,26,32,[34][35][36][37][38][39][40][41] temperature, 27,42,43 pressure effect, [44][45][46] magnetic eld, 28 and humidity. 29 Their functional gates provide a conformational switch for adjusting the pore sizes and the surface properties of the membranes and thus manipulating the permeability and selectivity.…”

“…1 shows a variety of different materials and technical approaches required for each method, such as absorption, adsorption, 20 membrane separation, 21 and smart gating membranes. 22–46 Nowadays, gas capture by membrane technology is commercially available because it is relatively simple, environment-friendly, cost-effective, not energy-intensive, and it's an easily-scalable technique extensively studied for gas removal. 22–29,47–55 Thus, membrane-based gas separation to reduce pollutants such as CO 2 , H 2 , O 2 , N 2 , and SO 2 gas molecules is essential to attain sustainable global development.…”

Preparation and Characterization of PEBAX-5513/AgBF4/BMIMBF4 Membranes for Olefin/Paraffin Separation

“…Membrane separation is more advantageous than cryogenic distillation in terms of the energy consumption, eco-friendliness, and equipment. In addition, membrane separation is not only used in olefin/paraffin separation, but can also be applied to gas mixtures such as CO 2 /N 2 , CO 2 /CH 4 , O 2 /N 2 , N 2 /SF 6 , and H 2 /O 2 [ 7 , 8 , 9 , 10 , 11 ]. However, it is difficult to simultaneously increase the selectivity and permeability in membrane separation due to the trade-off phenomenon [ 12 , 13 ].…”