改性分子篩在苯酚與MTBE合成對叔丁基苯酚反應(yīng)中的催化作用.pdf

1、湖南師范大學(xué)碩士學(xué)位論文改性分子篩在苯酚與MTBE合成對叔丁基苯酚反應(yīng)中的催化作用姓名：黃朝暉申請學(xué)位級別：碩士專業(yè)：應(yīng)用化學(xué)指導(dǎo)教師：尹篤林佘喜春20050501AbstractInthispapertheZSM。5andHYcatalystsmodifiedbyZnCl，havebeenpreparedandusedwidelyforthealkylationofPhenolwithMTBEtoStlCCeSSfullysynthe

2、sizedPBTPTheinfluencesofdifferentfactorsoftheZnCl2／zSM5orZnCl2／Ycatalystssuchasreactionconditions，activecontainingandthecharacteristicofcatalystshavebeensystematicallydiscussedThereactionmechanismforthealkylationofPhenol

3、withMTBEhasbeenputforwardAndtheireellparameters，relativecrvstallinenatureBEHsurfacearea，porestructure，acidityandcatalyticperformanceshavebeenmeasuredbyXRD，BETNH3一TPD，ICPAESTheresultshaveshownthatdifferentfactorsdiscussed

4、abovehavedifferentinfectsonZnClz／ZSM5andZnClz／IIY1TheZSM5catalystsmodifiedbyZnCl，havebeendiscussed，especiallythereactionconditionsandactivatedtemperaturewereemphaticallyproposedItshowedZSM一5catalystsmodifiedbyZnCl2displa

5、yedimportantrolestoimprovethecatalyticactivities，theselectivityfor口BTPandstabilityofcatalystAttheoptimumconditions，theconversionandselectivityare548％and619％respectivelyThefurtherresultshaveshownthatthestabilityofcatalyst

6、swasworse，anditwouldlosetheactivitythecausewasthattheZnCl2activecomponentofthiscatalystwaseasytoloseintherunningprocess2TheHYcatalystsmodifiedbyZnCl2havebeendiscussed，especiallythereactionconditionsandactivatedtemperatur

7、ewereemphaticallyproposedItshowedHYcatalystsmodifiedbyZnCl2displayedimportantrolestoimprovethecatalyticactivities，theselectivityforPBTPandstabilityofcatalystAttheoptimumconditions，theconversionandselectivityare808％and909

8、％respectivelyThefurtherresultshaveshownthatthestabilityofcatalystswasWOrSe，anditwouldlosetheactivityThecarbonaceousdepositiononthesurfaceofcatalystparticleswasthemainlycause3ThemechanismforthealkylationofPhenolwichMTBEha