疏水性沸石分子筛的特性及表面改性研究

X(,,414000):,:;;;:TQ127^2:A:1009-9212(2002)06-0036-02,,10t[1]120,,,,1111,,Si/OAl/O,,[1]12,SiO2Al3+Si4+,,Al/O,,,,10-4mg,,,,,,116!,01401140,,Si-O-Si,,112:,[24],[5]1131[2,5],,,60%,80%,,,114326200212FINECHEMICALINTERMEDIATESVol.32No.6December2002X:(1964-),,,,:2002-09-12,,,Y9002h,,,,,[4]2,,,211,500,,,SiO2/Al2O3,,SiO2/Al2O3,,,L212400,,Y(SiO2/Al2O34)450550,2h,SiO2/Al2O340100,,SiO2/Al2O3550Y213,,:AlOOOONH+4+(NH4)2SiF6SiOOOO+(NH4)2AlF6214CVDCVD,CVDCVD,Ar(OEt)4ZSM25,[8]3,,,,5!,5!,,,,13X,,,,,,,50%,,:[1]SzostakR.HandbookofMolecves[M].VanNostrandReinhold:NewYork,1992.230[2].œŠÉ„¨[M].¿‹Ë.ˆÓ˜«ÄÊӐ,1996,(4):4652.[3]BreckDW.HydrothermalChemistryofZeolite[M].London,A2cademicPress:NewYork,1982.176.[4]VasantEF.PoreSizeEngineeringinZEOLITE[J].OhnWileyandSons:NewYork,1990.90.[5]DeVosDE,KnopsPP,FartonEFetal.J.Inclus.Phenom[J].Mol.Recogn.Chem.,1995,21,185.[6].()[M].:,1983:199205.[7].¿‹Ë[J].ˆÓ˜«ÄÊӐ,1995,(8):612.[8]N.M.Samsonov.AComplexofSystemforOxygenRecoveryAboardaMannedSpaceStation[P].SAE932275.736:etal.(DepartmentofChemistryandBiology,HunanLoudinormalCollege,HunanLoudi,417000,China)J,finechem.intermediates,2002,32(6).2526Thecatalyticsynthesisofisoamylcinnamatebytheesterifi-cationreactionofcinnamateacidandisoamylolinthepresenceofdifferentacidcatalystswasinvestigatedinthispaper.Itwasfoundthatp-toluenesulfonic(PTS)acidwastheefficientcata2lyst,andalsotheoptimumconditionshavebeenestablishedfromtheratioofreactantsandtheamountofcatalystusedinthereac2tion.Theyieldofisoamylcinnamateis81%whentheratioofcinnamateacidandisoamylolwas1:1.3,over3%PTScata2lyst.ThesyntheticisoamylcinnamatewasidentifiedbyIRspec2trumanditsphysico-chemicalconstant,whichwasinagree2mentwiththeauthenticsample.Keywords:3-phenyl-propenoate;isoamylol;isoamyl3-phenyl-propenoate;p-toluenesulfonic;catalyticsynthesisSynthesisof2-Amino-5-(N,N-diisopropyl)amino-l,3,4-thiadi-azole.YEYu-yuan,etal.(DepartmentofChemistry,TaizhouCollege,TaizhouZhejiang,317000,China)J,finechem.intermediates,2002,32(6):27282-mino-5-(N,N-diisopropyl)amino-1,3,4-thiadiazolewassynthesizedusingaminothioureaandformicacidasrawmaterialsthroughcyclocondensation,bromationandami2nation.Thefactorsinfluencingthereactionswereinvestigated.Theoverallyieldwas60%,thepurityoftheproductwasover99%.Theoptimumconditionofsynthesiswasestablished.Keywords:2-Amino-5-(N,N-diisopropyl)amino-1,3,4-thiadiazole;2-Amino-l,3,4-thiadiazole;cyclo2condensation;bromation;aminationSynthesisofDioctylMeleatebySolidSuperAcidSO2-4/TiO2/La3+Catalyst.HUAPing,etat.(DepartementofChemicalEngineering,NantongInstituteofTechnology,Nantong,226007,China).J.finechem.intermediates,2002,32(6):29SolidsuperacidcatalystSO2-4/TiO2/La3+waspreparedandusedinsynthesizingdioctylmaleate,incomparisonwithsulfuracidandp-toluenesulfonicacid.Theeffectsofpreparedcondi2tionssuchasthesulfuracidconcentration,thetemperatureandtimeofbakringoncatalyticactivityandreactiontimeonesterifi-calion.Theresultsshewthatthecatalysthadsplendidcatalyt2icactivityforthesynthesisofdioctylmaleale,immersing10hoursin1.8mol/L.sulfuracidsolution,baking3hoursat550,theyieldofdioctylmeleatewasover96.9%.Keywords:solidsuperacid;dioclylmelate;esteratificationStudyonLilyDebittering.RENFeng-lian.etal.(CollegeofChemistryandChemicalEngineering,CentralsouthUniver2sity.Changsha.410083,China)J.finechem.intermedi2ates,2002,32(6):3233Themethodsoflilydebitteringwerestudiedandthedebit2teringtechnologicalconditionswereoptimizedbyvertical2method.Aproperprocesscombineddebitteringwithcolourpro2tectionwasdeveloped.Themethodiseconomical,practicableandtheexperimentresultissatisfying.Keywords:lily;debittering;optimized;colourprotectionStudyonthePreservationofLitchi.YAORong-gui,etal.(CollegeofChemistryandMolecularscience,Wuhan,430072,China)J,finechem.intermediates,2002,32(6):34Thecontentoflitchisglucoseandacidwasdeterminedafterbeingkeptunderlowtemperature.Thedifferentchangeunderdifferentconservationconditionwerecompared.Keywords:litchi;glucose;acidResearchonthePreparationTechnologyof-Bromide-p-hy-droxyacetophenone.LIUCan-ming.(CollegeofScience,HunanAgriculturalUnivresity,Changsha,410128,China).J,finechem.intermediates,2002,32(6):35Anewapproachtopreparing-bromide-p-hydroxyace-tophenonewasintroducedthroughthereactionofp-hydroxy2ace-tophenoneandliquidbromineusinghydrobromicacidascat2alystandalcoholassolvent.Inaddition,Thetechnologicalcondi2tionsasreactiontemperature,reactiontime,etcwereexplored,thusthecostofproductonwasbroughtdownandtechnologicaloperationwassimplified.Keywords:-Bromide-p-hydroxyacetophenone;prepa2ration;catalystStudyonthePropertiesandSurfaceModificationofHydropho2biaZeolumMolecularSieve.HUANGYan.(DepartmentofChemistryandChemicalEngineering,YueyangNormalUni2versity,Yueyang,414000,China)J.finechem.intermediates,2002,32():36Thehydrophobicmechanism,sorptioncharactersandsur2facemodificationtechnologyofhydrophobiczeolitemolecularsievewerepresented.ThedevelopingprospectsofthistechnologyappliedonCO2controlwasdiscussed.Keywords:zeolite;hydrophobic;surfacemodificationStudyonMakingLignin-quaternaryAmicSaltFlocculant