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1、第23卷第4期洁净煤技术Vol．23No．42017年7月CleanCoalTechnologyJuly2017研究论文离子液体聚合物CO吸附性能研究21,2,3郭辰辰(1.煤炭科学技术研究院有限公司煤化工分院,北京100013;2.煤炭资源高效开采与洁净利用国家重点试验室,北京100013;3.煤基节能环保炭材料北京市重点试验室,北京100013)摘要:为提高离子液体吸附CO的性能,通过自由基聚合制备了季铵盐类离子液体聚合物,采用两2步种子溶胀法使该聚合物形成多孔结构,并通过扫描电子显微镜和差热-热重分析法对其形貌和热稳定性进行表征。研究了4种溶胀剂制备的多孔聚
2、合物吸附CO的性能,试验结果表明:制备的多2孔聚合物具有发达的微孔结构,孔径在0．4~0．8nm内连续分布,且较集中于0．5~0．6nm,达到38%以上;溶胀剂的种类对孔径分布及累计孔容有显著的影响,可归因于溶胀剂与聚合物的溶解度差异,采用混合溶胀剂得到的孔径分布更加均匀,而采用环乙烷溶胀剂得到的累计孔容明显减少;多孔聚合物的CO吸附量主要受累计孔容的影响,累计孔容相当的聚合物吸附CO的量也近似,在27322K、0．101MPa条件下,约为1．1%。关键词:离子液体;聚合物;孔径分布;溶胀剂;CO吸附2中图分类号:X701文献标志码:A文章编号:1006-6772
3、(2017)04-0114-05InvestigationoftheCOadsorptionperformanceofionicliquidpolymer21,2,3GuoChenchen(1.BeijingResearchInstituteofCoalChemistry,CoalScienceandTechnologyCo.,Ltd.,Beijing100013,China;2.StateKeyLaboratoryofCoalMiningandCleanUtilization,Beijing100013,China;3.BeijingKeyLaboratoryo
4、fCoalBasedCarbonMaterials,Beijing100013,China)Abstract:ToimprovetheCOadsorptivecapacitiesofionicliquid,thequaternaryammoniumsaltionicliquidpolymersweresynthesized2byfreeradicalpolymerization.Additionally,theporousionicliquidpolymerswereachievedbytwo-stagedseededswellingpolymerzation.T
5、hecharacteristicsofthepolymersweretestedbySEMandDSC-TG.AdsorptionisothermsofCOonthepolymers,whichweresynthesized2byfourdifferentkindsofswellingagents,wereinvestigated.Themainfindingsaresummarizedasfollows:theporousionicliquidpolymershavehighlydevelopedmicroporestructure,andtheporewidt
6、hshavecontinuousdistributionintherangeof0.4~0.8nm.Theporewidthsmainlydistributeintherangeof0.5~0.6nm,whichisupto38%.Theswellingagentshadeffectonporesizedistributionandthecumu-lativeporevolume,whichisattributedtothedifferenceofthesolubilitybetweentheswellingagentsandpolymers.Theporesiz
7、edistribu-tionofpolymersismoreuniformwhenusingthemixedswellingagents.Thecumulativeporevolumedecreasesobviouslywhenusingthecy-clicethaneswellingagents.TheCOadsorptivecapacityismainlyaffectedbythecumulativeporevolume.Thepolymerswithequivalent2cumulativeporevolumehavethesimilarCOadsorpti
8、vecap
