金属有机骨架材料mil-101cr的改性及常压下吸附co2的研究

《金属有机骨架材料mil-101cr的改性及常压下吸附co2的研究》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。

1、ABSTRACTBurningofquantitiesoffossilfuelscausingincreasingelevatedconcentrationofatmosphericC02whoseexcessiveemissioncouldexacerbatethegreenhouseeffect，whichcausingglobalaveragetemperaturegraduallyincreasedandseriouslyaffectthenormallifeofhuman．Therefore，theefficientC02c

2、apturebecomesoneofthehottopicsofresearchathomeandabroad．Metalorganicframeworks(MOFs)materialasaclassofnovelporousmaterialswithuniqueproperties，ithasgreatapplicationpotentialintermsofgasadsorptionseparationresultfromhavingtheadvantagesoflargespecificsurfacearea、developed

3、porestructureandadjustablesizeofaperture，etc．UsingMOFsmaterialforCOzcaptureandseparationwerereceivedextensiveattentionfromresearchers．ThisstudyselectstheMIL一101(Cr)astheobject，asystematicstudyoftheC02adsorptionpropertiesofthebeforeandafteramino·functionalizedmaterialsat

4、ambienttemperatureandpressure．Themainresearchcontentsandconclusionsareasfollows：(1)Ethylenediamine(ED)wasgraftedonM1L一101(Cr)bysolvothermalmethod，synthesizedanewtypeofadsorbentMIL一101-ED，andcharacterizedwithXRD、N2adsorption-desorption、infraredandSOonMeasuredtheC02adsorp

5、tionpropertiesao．dC02／N2adsorptionselectivityofthemodificationmaterialsunder298Kand1．01xl05Pa，andresearchedtheeffectsofquantityofgraftedethylenediamineandtemperatureonthematerialstructure，morphologyandC02adsorptionperformance．TheresultsshowthattheC02uptakecapacityofethy

6、lenediamine—modifiedMIL·101(Cr)materialscouldbe2．43mmol／gatambienttemperatureandpressure，14．6％higherthanMIL-101(Cr)，C02／N2adsorption-separationcoefficientincreasedfrom11to17．55．6％higherthanbeforemodification．Modifiedmaterialscanbecompletelydesorptionregenerationafter80℃

7、vacuumheatingwhichhastheverygoodstabilityofregeneration．(2)Throughcombinationpre—modificationwithpostsyntheticaminomodificationfunctionalmethods，firstdopedwithdifferentamountsof2-aminoterephthalicacidligandforthesynthesisofMIL-101(Cr)andgetaseriesofdifferentdopingamount

8、sof2-aminoterephthalicacidligand-modifiedmaterialNH2一MIL-101，andexperimentwithXRD，N2adsorption—desorptionchara