間接電合成芳香醛的中試研究.pdf

1、河北師范大學(xué)碩士學(xué)位論文間接電合成芳香醛的中試研究姓名：胡瑞省申請學(xué)位級別：碩士專業(yè)：有機(jī)化學(xué)指導(dǎo)教師：韓士田顧登平20040510河北師范大學(xué)同等學(xué)力申請碩士學(xué)位論文AbstractTheserialproduetsofaromaticaldehydefilehaportantmaterialsfororganicandchemicalindustrywhichhasbeenWidclyusedintheorganicsynthesi

2、sfieldParticularlyinIecent煳thearomaticaldehydehasbeenemployedaSoneessentialreactionmediuminthemedicine，pestickle，p擊lI／nedyephotosensitivematerialandliquidcrystalmaterialForthisregsontheproductsofaromaticaldehydewillprese

3、ntthesatisfactor)，ecorcomiealaswellassocialefficiencyAtpresentthereisonlychemicalmethodtoproducearomaticaldehydeIn血echemicalprocess，therearemanydefectssuch罄KghtemperaturehighpessⅢe，expensivecatalystlongpDcesS，lowyiddseri

4、ouspollutionetcThereforeitisvery聯(lián)積落saryt0seekanewprocesstosolvethepmblcrnintheproductionofaromaticaldehydeastomeetthemarketda=I)觚dThisthesis，baSiIaSOnOllrcountryconditionhasstudiedthesynthesispathandpricipleofaroll碰Calde

5、hydewithindirectelectrooxidationmethod㈣systematicallyThesocalledIEMw鵪explainedthisway：oneelectroactivemediumisoxidizedtoaIlighervalencestatewithelectroehemisttywhichisonestrongeromdantandthenwasintroducedtoareactionvsssa

6、l，wherethesubstitutedmcthylbcnzemisoxidizedtoaromaticaldehydebytheaboveoxidantmediumselectivelyAsaresultafteri甘tclJonwiththesubstitutedmethylbenzenetheoxidantmedium把sc叫囂toitsformerlowervalencestate，andthus，alterattractin

7、gthemediumcouldbeoxidizedagainintheelectrlysiscellTherefore，theprocesscontinuedfromtheinlroducfionofindirectelectrooxidationmethodWeknowthattheelectroactivemediumcouldbeusedeyclicz／lytheconsumingparts0f讎processisonlythee

8、lectricityand呷乒此reactantThereareallcharactersofmeindirectelectrooxidationmethodsuchasthepurerproductsthesimplergocess，lowinvestmentnopollutionBothCe4／Ce3andCr20727Cr3wereemployedaStheelectroactivemediumt0producePmethoxyb

9、enzaldehydewiththeindirectelectrooxidationThecutrentdensityratioofanodeareatheconcen在afionofCe”，theconcentrationofsupportingelectrolyteandthetcmpcmtmofeleclrolysiswerealltakenintoaccountdmingtheelectrooxidationprocessThe

10、cellstructureofP—methoxybenzaldehydebytheindirectelectrosynthesisusingasCe4／Ce3electrolyticmediumwasstudiedOutsidecellreactionsofindirectelectrosynthesisofp—methoxybenzaldehydebyusingCe4／Ce3electrolyticmediumintheemulsif