Separation media that combine the desired material properties within a single material for a given process remain an ongoing challenge for the gas separations in in-dustry.Process integration of porous solid adsorbents is dif-ficult due to their limited volumetric capacity,whereas issues of volatility and high regeneration temperatures exist for li-quid amines and physical solvents.Herein,we report a family of polymer liquids inspired by hyper-crosslinked polymers(HCPs),a class of highly swellable network polymers.Com-pared with a chemically similar porous solid,the HCP-liquids demonstrate good volumetric capacity and improved se-lectivity of carbon dioxide over methane.Uptake appears to be enhanced by intramolecular swelling of the HCP-liquids at elevated pressures,while guests are strongly rejected from the HCP-liquids at slightly elevated temperatures,leading to highly efficient regeneration.Heat of adsorption and specific heat capacity of the HCP-liquids are also low,further sug-gesting favourable process thermodynamics.Additionally being easily prepared at scale,the presented HCP-liquids re-present a promising step towards a material with the requisite properties to replace conventional scrubbing solvents to drastically reduce the footprint and energy needs of gas se-parations.

Stefan J.D.Smith;Colin D.Wood;Paul H.M.Feron;Hamidreza Mahdavi;Roger J.Mulder;Cara M.Doherty;Matthew R.Hill;Xavier Mulet

CSIRO Manufacturing,Private Bag 10,Clayton South,VIC 3169,Australia;Department of Chemical Engineering,Monash University,Clayton,VIC 3800,Australia;Australian Resources Research Centre,Kensington,WA 6155,Australia;CSIRO Energy,P.O.Box 330,Newcastle,NSW 2300,Australia

中国科学：材料科学（英文）

[1]Stefan J.D.Smith;Colin D.Wood;Paul H.M.Feron;Hamidreza Mahdavi;Roger J.Mulder;Cara M.Doherty;Matthew R.Hill;Xavier Mulet-.Porous solid inspired hyper-crosslinked polymer liquids with highly efficient regeneration for gas purification)[J].中国科学：材料科学（英文）,2022(07):1937-1942

quid,swellable,parations

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