富氮碳基微孔材料的制備及其CO2物理吸附性能研究.pdf

1、分類號：TQ311密級：不保密UDC：620學校代碼：11065碩士學位論文富氮碳基微孔材料的制備及其富氮碳基微孔材料的制備及其CO2物理物理吸附性能研究吸附性能研究張美榮指導教師叢海林教授學科專業(yè)名稱材料學論文答辯日期2015年05月31日IIAbstractCarbonbasedmicropousmaterialsattractgreatinterestsbecauseoftheiruniquecompositionstructur

2、ehighspecificsurfaceareanarrowpesizehighphysicalchemicalmechanicalstabilityasthemostpromisingcidatesfCO2adsptionseparation.ThemicropousvolumepesizeheatofadsptionstabilitycanaffectthephysicaladsptionpropertiesofCO2CO2N2iv

3、ity.WesynthesizeaseriesofMRpolymermicrosphereswithanextendedwkviaahydrothermalmethodusingmelamine(M)fmaldehyde(F)rescinol(R)asprecurss.AseriesofnitrogenenrichedmicropouscarbonshavebeenpreparedbydirectKOHactivationofmelam

4、inedopedphenolicresins.InthiswkweprimarilyinvestigatedtheratioofMR(1:13:1)effectofactivationtemperature(500700oC)ontheBETspecificsurfaceareamicropevolumeofmicropouscarbonmaterial.Furtherstudiedwascarriedontherelationship

5、ofNcontentactivationtemperatureCO2captureCO2N2ivity.TheactivatedcarbonsshowhighCO2uptakesuptoca.1.3mmolgunderlowpressure(0.15bar25oC)whichcanberibedtonotonlytheiroptimalfractionofultramicropesbutalsothehighNcontents.Oneo

6、fthesamplesevenexhibitsexcellentadsptionivityfCO2overN2(i.e.ivityfactsof43.752.9obtainedfrominitialslopeIASTcalculationsrespectively).FurthermethepreferentialCO2uptakeofthecarbonswasconfirmedbysuccessivebreakthroughexper

7、imentsunderpostcombustionfluegasstreamconditions(15%CO2concentration1bar25oC).SincethesecarbonsalsofeaturegoodstabilityoverrepeatedthermalcyclingeaseofregenerationtheirpracticalapplicationsinpostcombustionCO2captureshall