Carbon dioxide permeation studies were conducted on polyether-sulfone (PES) microspheres fabricated using phase-inversion technique by loading various amine-functionalized imidazolium cation ILs with a common anion bis-trifluoromethylsulfonylamide ([TF₂N]⁻) on PES-polymer matrix. The cations include: Aminopropyl-butyl-imidazolium [APBIM], Diethyl-aminoethyl-imidazolium [DEAEBIM], Diaminopropyl-butyl-imidazolium [DMAPBIM]. Breakthrough adsorption of CO₂ and CH₄ was studied with a feed composition of 20% CO₂, 20% CH₄ and 60% N₂ by weight (4.835 mmol/L of CO₂, 13.296 mmol/L of CH₄ and 22.794 mmol/L of N₂), at flow rates of 22 and 36 mL/min (superficial gas velocities are 0.29 cm/s and 0.47 cm/s). Among the ILs studied, [APBIM] showed maximum CO₂ permeation. Results indicate that pore size and porosity are crucial for better CO₂ absorption and need of further modification to microspheres morphology.

中文翻译：

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离子液体负载的聚醚砜微球用于CO 2分离

在使用相转化技术制造的聚醚砜（PES）微球上进行了二氧化碳渗透研究，方法是在PES聚合物基质上将各种胺官能化的咪唑鎓阳离子IL负载有常见的阴离子双三氟甲基磺酰胺（[TF ₂ N] ^-）。阳离子包括：氨基丙基-丁基-咪唑鎓[APBIM]，二乙基-氨基乙基-咪唑鎓[DEAEBIM]，二氨基丙基-丁基-咪唑鎓[DMAPBIM]。CO的突破吸附₂和CH ₄，用20％CO的进料组合物的研究₂，20％CH ₄和60％N ₂（重量）（4.835毫摩尔/ L的CO ₂，13.296毫摩尔/ CH L的₄和22.794毫摩尔/ L N₂），流速为22和36 mL / min（表观气体速度为0.29 cm / s和0.47 cm / s）。在所研究的IL中，[APBIM]显示出最大的CO ₂渗透。结果表明，孔径和孔隙率对于更好地吸收CO ₂和需要进一步修饰微球形态至关重要。