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Ionic liquid loaded polyether sulfone microspheres for CO 2 separation
Adsorption ( IF 3.0 ) Pub Date : 2020-06-09 , DOI: 10.1007/s10450-020-00241-4
D. Shanthana Lakshmi , Y. S. Sistla , A. Khanna , A. Figoli

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:

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。
更新日期:2020-06-09
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