粉煤灰合成沸石的研究

《粉煤灰合成沸石的研究》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。

1、山东轻工业学院硕士学位论文粉煤灰合成沸石的研究姓名：刘艳申请学位级别：硕士专业：应用化学指导教师：邢存章20080610ABSTRACTAhugeamountofcoalflyash(CFA)isdischargedfromelectricpowerplantsthroughouttheworldeveryyear．Themajorapplicationofthecoalflyashistheuseforcementorconcretemanufacturing．However，thisapplicationiSlimited

2、withinthedemandofthebuildingrequirements．Recently，zeolitesynthesisfromcoalflyashhasbeenreceivingmoreaRention．IIlthisstudy，severalzeolitessuchaszeoliteNaP1．zeoliteNaAandzeoliteNaXweresynthesizedbyconvertionalhydrothermalmethodandmicrowavesupplementmulti—stagesynthesi

3、stechnology．Theeffectsofhydrothermalalkalineconditionsandadditivesonthecationexchangecapacity(CEC)valuesofzeoliteswereinvestigated．TheeffectofSi／A1molarratioofthereactantsonthetypeofzeolitewasalsodiscussed．Themajorconclusionsare：(1)TheCECvaluesofzeolitesweregreatlyd

4、ependentonthehydrothermalconditionssuchasreactivetemperature，reactivetime，liquid／solidratioandtheconcentrationofsodiumhydroxide．Theoptimalconditionsforzeolitesynthesisbvconvertionalmethodwerefoundtobe120℃oftemperature，6hoftime，8．0mL／gofliquid／solid，2mol／LofNaOH．TheC

5、ECvaluesofNaP1，NaAandNaXare175．9mmol／1009，163．8mmol／1009and178．3mmol／1009，respectively．(2)TheCECvaluesofzeoliteproductswereimprovedremarkablybytheadditivessuchasNaF，cetyltrimethylammoniumbromide(CTAB)and95％ethan01．(3)ThetypeoftheproductsisdecidedbytheSi／A1molarratio

6、ofthecoalflyash．whichcanbeadjustedbyadditionofNaAl02．(4)Themicrowavesupplementmulti-stagesynthesistechnologyplaysanimportantroleinreducingtheoverallsynthesiswhilemaintainingahighdegreeofCECvaluefortheproducts．Thetypicalmulti-stagesynthesisprocedureis：themixedsolutio

7、nwastreatedundermicrowavesystemat80℃for20rainatthefirststep．andthentothesecondstepunderconventionalsystemat120℃for2h．intheendundermicrowavesystemat100℃for40rain．Keywords：coalflyash；zeolite；synthesis；additive；microwaveVI学位论文独创性声明本人声明，所呈交的学位论文系在导师指导下本人独立完成的研究成果。文中引用他人

8、的成果，均已做出明确标注或得到许可。论文内容未包含法律意义上已属于他人的任何形式的研究成果，也不包含本人已用于其他学位申请的论文或成果，与我一同工作的同志对本研究所做的任何贡献均已在论文中作了明确的说明并表示谢意。学位论文知识产权权属声明本人在导师指导下所完成的论文及相关的职