DVB用量对SDB结构和Pt-SDB催化性能影响研究-豆柴文库

您所在位置：网站首页 / DVB用量对SDB结构和Pt-SDB催化性能影响研究.docx / 文档详情

在线预览结束，喜欢就下载吧，查找使用更方便

5 金币

下载文档

/ 2

下载提示

如果您无法下载资料，请参考说明：

1、部分资料下载需要金币，请确保您的账户上有足够的金币

2、已购买过的文档，再次下载不重复扣费

3、资料包下载后请先用软件解压，在使用对应软件打开

文本预览

DVB用量对SDB结构和Pt-SDB催化性能影响研究
Introduction
DVB,alsoknownasdivinylbenzene,isawell-knowncrosslinkingagentthatisfrequentlyusedinthesynthesisofmacroporouspolymers.DVB-basedpolymershaveawiderangeofapplications,andtheirpropertiescanbeeasilymodulatedbychangingtheamountofDVBused,aswellasthetypeofpolymerizationcatalystemployed.OneparticularareawhereDVB-basedpolymershavebeenextensivelystudiedisinthefieldofheterogeneouscatalysis.Inthiscontext,DVB-basedpolymerscanbeusedassupportsformetalnanoparticles,allowingforthedevelopmentofhighlyactiveandselectivecatalyticsystems.ThisstudyfocusesontheinfluenceofDVBusageonthepropertiesofSDBstructuresandPt-SDBcatalyticperformance.
ImpactofDVBusageonSDBstructure
SDB,orstyrenedivinylbenzene,isatypeofmacroporouspolymerthatisusedextensivelyinthefieldofchromatographyduetoitshighporosityandexcellentmechanicalproperties.ThepropertiesofSDBcanbemodulatedbyvaryingtheamountofDVBusedduringthepolymerizationprocess.Ingeneral,increasingtheamountofDVBresultsinahigherdegreeofcrosslinking,leadingtoareductioninporesizeandanincreaseinmechanicalstability.Atthesametime,ahigherdegreeofcrosslinkingcanalsoresultinalowersurfacearea,whichcanimpactthecatalyticperformanceofSDB-basedmaterials.
Inrecentyears,severalstudieshaveexaminedtheimpactofDVBusageonthepropertiesofSDBstructures.Forexample,astudybyKimetal.(2010)examinedtheeffectofDVBcontentonthemechanicalpropertiesofSDBstructurespreparedusingacopolymerizationprocess.TheresultsshowedthatanincreaseinDVBcontentledtoanincreaseintheYoung'smodulusandtensilestrengthoftheresultingSDBmaterials,whilethestrainatbreakdecreased.InanotherstudybyChenetal.(2019),theimpactofDVBusageontheporestructureofSDB-basedmaterialswasexamined.TheresultsshowedthatanincreaseinDVBcontentledtoareductioninporesizeandanincreaseinthedegreeofcrosslinking.ThesefindingshighlightthecriticalroleofDVBincontrollingthepropertiesofSDB-basedmaterials.
ImpactofDVBusageonPt-SDBcatalyticperformance
Pt-SDBcatalystshavebeenwidelystudiedinrecentyearsduetotheirhighactivitya