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24 52005 9 ENVIRONMENTALCHEMISTRYVo.l24,No.5September2005 2004122. *(04JK307)、(SLG0321).*葛红光1 甄宝勤1 赵思珍2 陈开勋2 郭小华1 陈丽华1(1 ,,723000;2 ,,710069) CuO/γ-Al2O3MnO2/γ-Al2O3,H2O2,.,CuOMnO2.、.24—26MPa、400—450℃,COD99%..CuO/γ-Al2O3MnO2/γ-Al2O3.,OH,CO2,N2H2O. ,,. ,.SCWO(SupercriticalWaterOxidation),[1-3].,(CatalyticSupercriticalWaterOxidation—CSCWO),CSCWO,[4-5]. MnO2/γ-Al2O3CuO/γ-Al2O3.1 1.1 (98%),COD0(COD0=1403mgl-1). MnO2/γ-Al2O3CuO/γ-Al2O3[6].1.2 14×2.5mm,150mm,9.54m.l,.(30%),400—450℃,24—26MPa. GC,GC-MSCODCr.CODCr.2 2.1 400℃,24MPa,SCWO1.CuOMnO2γ-Al2O312wt%13wt%..,(H2O2).nH2O2.n=1.5. 1,MnO2CuOCOD,γ-Al2O3COD.γ-Al2O3,COD,.,CuOMnO2. 5:543 1 Fig.1 EffectsofcatalystonCODremoval2.2 24MPa,2. 2,CSCWO,,.COD,.CuOMnO2,CSCWO,(400℃),COD,SCWOCOD[7].CSCWO:,,;,,.,,.,400—450℃.2 Fig.2 EffectoftemperatureonCODremoval2.3 ,CuO(12wt%),400℃,3 Fig.3 EffectofpressureonCODremoval24MPa26MPa,CSCWO,COD3. 3,,COD.400℃、6s,24MPa26MPa,COD96%97%.,24MPa,COD(94%),,24MPa.2.4 CSCWO,.1—3,,,COD,.,,.,,,.2.5 CSCWO544 24 .、;,.OHCH3CSCWO,OH.GC,,CO2,N2H2O.3 (1),,. (2)CuO/γ-Al2O3MnO2/γ-Al2O3,24—26MPa、400—500℃,COD99%. (3)CuO/γ-Al2O3MnO2/γ-Al2O3. (4)CSCWOOH,CO2,N2H2O. [1] ,,,———.,1997,16(3)∶39—44[2] MotonobuGoto,TakatsuguNada,AkaneOgataeta.l,SupercriticalWaterOxidationforTheDestructionofMunicipalExcessSludgeandAlcoholDistilleryWastewaterofMolasses.SupercriticalFluids,1998,13(3)∶277—282[3] ,,,,,2001,20(5)∶432—436[4] YuJianli,SavagePhillipE,PhenolOxidationoverCuO/Al2O3inSupercriticalWater,AppliedCatalysisB:Environmental,2000,28(4)∶275—288[5] LinKuen-Song,WangHPaul,YangYW,SupercriticalWaterOxidationof2-chlorophenolEffectedbyLi+andCuO/Zeolites.Chemo-sphere,1999,39(9)∶1385—1396[6] ,,.:,2001,39—48[7] ,,,.,2004,24(2)∶83—85CATALYTICOXIDATIONOFUNSYMMETRICALDIMETHYLHYDRAZINEINSUPERCRITICALWATERGEHong-guang1ZHENBao-qin1ZHAOSi-zhen2CHENKai-xun2 GUOXiao-hua1 CHENLi-hua1(1 DepartmentofChemistry,ShaanxiUniversityofTechnology,Hanzhong 723001;2 CollegeofChemicalEngineering,NorthwestUniversity,Xi'an,710069)ABSTRACT Thecatalyticoxidationofunsymmetricaldimethylhydrazine(UDMH)wasinvestigatedinsupercriticalwaterusingCuO/γ-Al2O3andMnO2/γ-Al2O3ascatalystsandH2O2asaoxidantinapacked-bedflowreactor.TheresultsindicatethatCuOandMnO2catalystshavethedesiredeffectsofacceleratingtheUDMHdisappearance.ThehigherremovalofUDMHwasobtainedathighertemperature,higherpressureandlongerresidencetime.The99%removalofCODwasachievedat24—26MPaand400—450℃inafewseconds.ItshowedthatcatalyticsupercriticalwateroxidationwasabettertechnologyonUDMHremova.lThecatalyticeffectofcatalystCuO/γ-Al2O3wasbetterthanMnO2/γ-Al2O3insupercriticalwateroxidationprocessofUDMH.ThemoreinvestigationshowedthatcatalyticoxidationofUDMHwasfreeradicalreactioncausedbyOH.ThefinalproductswereN2,CO2andH2Oafteraseriesofcomplicatedreactions. Keywords:supercriticalwateroxidation,unsymmetricaldimethylhydrazine,catalysts.