介孔炭修饰复合炭膜的研究-化学工程专业毕业论文

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1、介孔炭修饰复合炭膜的研究CompositeCarbonMembranesModifiedbyMesoporousCarbonAbstractMembraneseparationtechnologyasanewgasseparationtechnologyhasmanyadvantages，suchashigh-efficiency，economical，simpleoperationetc，whichhasattachedmoreattentionowingtothis．Carbonmembrane，anewkindofcarbon-basedfilmmaterialswhichispyrol

2、ysedandcarbonizedfromthecarbonaceousmaterial，hassomecharacteristic，suchashightemperatureandcorrosionresistant，acidandalkali，goodbiocompatibility，adjustableapertureandexcellentgasseparationperformance，withamorebroadapplicationprospects．Homogeneouscarbonmembranehasa1imitedpracticalvalue．duetothebrittl

3、etextureandlowintensity．Inordertorealizeitspracticalapplication，usuallypreparedcompositecarbonmembrane，whichhasthecertainintensity，thatis，onacertainmechanicalpropertiesoftheporoussupportlayerofcarbonmembraneprecursormaterialshavebeenpreparedbypyrolysis．However，雒theporoussupportmaterialisgenerallylar

4、geraperture。thepresenceofpinholesorsurfacedefects，easilytransferredtothesurfaceoftheseparationlayer，itaffectstheseparationperformanceofcompositecarbonmembranes．Therefore，thesupportsurfacemodificationisthekeytohigh-performancecompositecarbonmembranesprepared．Mesoporouscarbonmaterialhavingahighspecifi

5、csurfaceareaandunifo皿porestructureof也efunctionalmaterialiSanidealmaterialformodifyingthecarbonsupportmembranedefects．Inthispaper，wefabricatedmesoscopicphasephenolresinwithdifferentacid，aikaUcatalystinsofttemplatesmethodandmodifiedsupportandtheseparationlayeriscoatedonthisbasis，preparedthecompositeca

6、rbonmembranes．Itanalyzestheimpactofreactiontemperature，time，andcarbonizationprocessandothersyntheticonmesoporouscarbonstructure．ByX—raydiffraction,nitrogenadsorption—desorptionunit，transmissionelectronmicroscopy(TEM)andgaspermeationdevices，orderedmesoporouscarbonde伊ee，porecharacteristics，poresizedis

7、tribution，microstructuremorphologyandgaspermeationseparationpropertieswereanalyzedandcharacterized．Resultsareasfollows：1．W油acidiccatalyst，whenthesynthesistimeof3h，theagingtimeof72h，carbonizationtemper