管式复合炭膜的制备及其气体分离性能

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1、大连理工大学硕士学位论文管式复合炭膜的制备及其气体分离性能姓名：刘颖申请学位级别：硕士专业：膜科学与技术指导教师：王同华20090701管式复合炭膜的制备及其气体分离性能PreparationoftubularcompositecarbonmembraneforgasseparationAbstractThecarbonmembraneshaveattractedmuchattentionrecently，whichshowedgreatpotentialintheareaofgasseparationfortheirsupe

2、rmicroporousdistinguishingsizeofgasmolecules，goodthermalandchemicalresistance．However，theyarestillcommerciallyunavailablebecauseoftheseproblems，i．e．poormechanism，hi．gh—cost,andlowgaspermeanceTherefore，itisurgenttoimprovethecompositebetweensurpportandprecursor,optimi

3、zepreparationtechnologyandimprovegaspermeation-ThecompositecarbonmembraneswerepreparedbycoatingthePAAandPPESKsolutiononthecoal-basedsupports．Effectsofdifferentporesizeofsupportsandpreparationconditionsonthegasseparationperformanceofcompositecarbonmembmneswereinvesti

4、gated．TheoptimumconditionsofcoatingtechnologytopreparePIandppeskbasedcarbonmembraneswasdeterminedandWaSthattheconcentrationofthecoatingsolutionarel6wt％、l5wt％andcoatingtimesarethree、two，respectively。Inorderedtoimprovethecompositebetweensurpportandprecursor,wechoseone

5、nonionicsurfactantasamodifierE位ctsofdifferentmolecularweightandamountofadditiveonthegasseparationperformanceofcompositecarbonmembmneswereinvestigated．Themodifiershowedthefunctionofimprovmgthecompositebetweensupportandprecumorandincreasedthepermeationratesatthesameti

6、me．Tkidealseparationfactorof02fN2forthePIandPPESKbasedcompositecarbonmembranesreached9．34and7．69，respectively．Aimingatimprovingthepermeationratesofcompositecarbonmembranes，interlayerwithorderedstructurehadbeenpreparedonthesurfaceofsupportsbyusingorderedmesoporousmat

7、erialasprecursors．Effectsofkindsandamountoftemplate、kindsofcatalyst、reactiontemperaturesandkindsofprecursorsmaterialsonthestructureofthefabricationmaterial．XRD、TEM、FTIRandTGwereusedtocharacterizethematerial．TheoptimumprocessWasdeterminedandWasthatmol(F127)：mol(R／F瑚．

8、0081．111eresultsindicatedthatthelargestporesizeofthesurfaceofthebituminouscoalsupportandmixedcoalsupportdecreasedfrom0．38、0．539mto0．299、0．