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Hypercrosslinked Microporous Aromatic Heterocyclic Polymers for Highly Selective C02/N2 Separation  
Hypercrosslinked Microporous Aromatic Heterocyclic Polymers for Highly Selective C02/N2 Separation
资料类型: PDF文件
关键词: Gas  adsorption  Heterocycle  microporous  polymer  Selectivity  
资料大小: 101K
所属学科: 分子表征
来源: 第六届亚欧研讨会上处理和性能增强聚合物会议文集(2013.6.2-6 武汉)
简介:
Theglobalclimatechangecausedbyexcessivecarbondioxide(C02)emissionshasattractedwidespreadpublicconcerninrecentyears.TostabilizeatmosphericC02levelsandpreventglobalwarming,itisimperativetodevelopviableC02captureandstorage(CCS)technologies.Microporousorganicpolymers(MOPs)relyingonphysicaladsorptionarepotentialcandidatesforC02capturebecauseoftheirlowregenerationenergyconsumptionandhighC02sorptioncapacity.Inthisstudy,aseriesofaromaticheterocycle-basedmicroporousorganicpolymerswaspreparedviaasimpleone-stepFriedel-Craftsreactionofalow-costcross-linkerwithordinaryaromaticheterocyclemonomers.ThestructureandmicromorphologyofthepolymerswereconfirmedbyFouriertransforminfrared,solid_statel3CCP/MASNMRspectroscopyandscanningelectronmicroscopy.Thematerials,withBrunauer-Emmet-Teller(BET)specificsurfaceareaover700m2.g-i,possessahighcarbondioxideuptake(upt012.7wt%at273Kandl.0bar),whicharecomparableorevenhigherthanthoseofamme-orcarboxylicacid-functionalizedmaterials.Specifically,thepyrrol-basednetwork,Py-I,showsanextraordinarilyhighselectiveadsorptionofC020verN2(about117at273K).Toourknowledge,thisselectiveC02sorptionisthehighestamongallthemicroporousmaterialsreportedtodate.TheseexcellentperformanceswouldprobablymakethempromisingcandidatesforC02captureandstorage.
作者: Y. L. Luo,B. E. Tad
上传时间: 2013-07-04 15:55:33
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