間苯二酚的低污染合成工藝開發(fā)探索

1、重慶大學碩士學位論文間苯二酚的低污染合成工藝開發(fā)探索姓名：常玉申請學位級別：碩士專業(yè)：應用化學指導教師：譚世語20030415重慶大學碩士學位論文英文摘要ABSTRACTResorcinol，whichisallimportantfineorganicintermediate，hasbeenwidelyusedformanyfieldssuchaSagriculture，dyestuffdope，medicineadhesiveandl

2、atexWiththerapiddevelopmentofautomobileindustrytheyieldoftyrewillbeenlargedSOmuchthattheoutputofresorcinolproducedathomecarl’tmeetthedemandinthemarketInanotherease，thetechnicsforresoreinolathomegiveslowresorcinolyieldbut

3、toomanypollutantswhichpollutetheenvironmentseriouslyWiththehigherandhigherrequirementforqualityofresorcinolandmoreandmoTeattenfiononenvironmentalprotection，theresearchonnewtechnicsofresorcinolhavingbetterenvironmentaleff

4、ectisveryneededAprocessforthepreparationofresoreinolfromdiisopropylbenzene(DIPB)hasbeenintroducedinthispaperAndafeas佑letechnicsisproposedasthefollowings：FirstlyDIPBisoxidizedforabout20～25hourstothediisopropylbenzenedihyd

5、roperoxide(DHP)ordiisopropylbenzenehydroxyhydroperoxide(HHP)underanhydrous，nonalkalineconditionswi廿1oxygenat85℃andtheremainingunreactedDIPBisrecycledtothefeedstreamforfurtherhydroperoxidationSecondlythehydroperoxidationp

6、roductextractedwith4％NaOHandreextractedwithmethylisobutylketone(MINK)atabout80。CispretreatedwithhydrogenperoxideLast，thedryingproductisdecomposedat50℃forabout20minutesinthepresenceofacatalystborontrifluoride，theactivityo

7、fwhich’isSOhi曲thatsignificantlysmallanaountofitaSlowas40pgwillworkandextracted耐m50ml3aethertoproducetheruderesorcin01Everytimewecanachieveabout20％yieldandabout40％finalyieldTheeffectofeveryfactorontheexperimentalresultsha

8、sbeenstudiedTheresultsshowthatthepresenceofwaterwillbringoutmoresubsidiaryreactionsandthecontrolontemperatureisimportantinthecourseofexperimentforDHPisveryunstableonheatBesides，itispropitioustoimprovetheyieldtocarryoutth

9、epretreatprocesssinceitwillconvertHHPtoDHEWaterwilldecreasetheactivityofborontrifluorideSOthem—DHPfractionmustbedriedbestwith4AsievesbeforedecompositionwithborontrifluorideTheproposesforfurtherstudyandindustrializedresea