甲苯、丙酮和乙酸乙酯在新型铂-钯不锈钢丝网催化剂上的催化氧化VIP免费

物理化学学报(WuliHuaxueXuebao)ActaPhys.鄄Chim.Sin.,2008,24(7)：1132-1136Received:January7,2008;Revised:March19,2008;PublishedonWeb:May7,2008.Englisheditionavailableonlineatwww.sciencedirect.com鄢Correspondingauthor.Email:chenmin@zju.edu.cn,yingmy@yahoo.com.cn;Tel:+86571鄄88273495;Fax:+86571鄄88273283.国家自然科学基金(20577042)及浙江省自然科学基金(Y505285)资助项目鬁EditorialofficeofActaPhysico鄄ChimicaSinica[Article]www.whxb.pku.edu.cnJuly甲苯、丙酮和乙酸乙酯在新型铂鄄钯/不锈钢丝网催化剂上的催化氧化马莹陈敏鄢宋萃郑小明(浙江大学(西溪校区)催化研究所,杭州310028)摘要：采用阳极氧化法制备了一种用于催化氧化处理挥发性有机化合物(VOCs)的0.1%Pt鄄0.5%Pd/不锈钢丝网(SSWM)催化剂.活性测试结果表明,0.1%Pt鄄0.5%Pd/不锈钢丝网催化剂具有较高的催化活性和热稳定性.该催化剂上甲苯、丙酮和乙酸乙酯的完全氧化温度分别为220、260和280益.通过扫描电镜(SEM)、X射线光电子能谱(XPS)和超声波等手段对催化剂和不锈钢丝网进行了表征.SEM结果表明,经阳极氧化工艺处理过的不锈钢金属丝网载体表面形成了一层沟壑形态的复合氧化膜.该阳极氧化膜有利于活性组分Pd、Pt的分散.关键词：催化氧化;不锈钢丝网;阳极氧化;X射线光电子能谱中图分类号：O643CatalyticOxidationofToluene,AcetoneandEthylAcetateonaNewPt鄄Pd/StainlessSteelWireMeshCatalystMAYingCHENMin鄢SONGCuiZHENGXiao鄄Ming(InstituteofCatalysis,ZhejiangUniversity(XixiCampus),Hangzhou310028,P.R.China)Abstract：Anewvolatileorganiccompound(VOC)combustioncatalystof0.1%Pt鄄0.5%Pd/stainlesssteelwiremesh(SSWM)waspreparedviaanodicoxidationtreatment.Theresultofactivitytestsforcompleteoxidationoftoluene,acetone,andethylacetateshowedthat0.1%Pt鄄0.5%Pd/steelwiremeshcatalysthadgoodcatalyticactivityandthermalstability.Thetotaloxidationtemperaturefortoluene,acetone,andethylacetatewasat220,260,and280益forthecatalystcalcinedat500益,respectively.Thecatalystandstainlesssteelwiremeshsupportwerecharacterizedbymeansofscanningelectronmicroscopy(SEM),X鄄rayphotoelectronspectrum(XPS),andultrasonicvibrationtests.TheSEMresultsindicatedthatatypicaldongastructurelayerappearedonthesurfaceofstainlesssteelwiremeshsupportafteranodicoxidationprocedure.ThistypicalanodicoxidationfilmwasfavorablefordispersingPdandPtcomponents.KeyWords：Catalyticoxidation;Stainlesssteelwiremesh;Anodicoxidation;X鄄rayphotoelectronspectraNowadays,thevolatileorganiccompounds(VOCs),fromchemicalandpetrochemicalplants,havegivenrisetocompre-hensiveattentionastheyarehazardoustotheenvironmentandhumanhealth[1].TherearemanydifferenttechniquesusedfortheremovalofVOCs,suchasadsorption,absorption,biofiltration,thermalincineration,andcatalystcombustion[2-6].Amongthem,catalyticdeepoxidationthatconvertsVOCsintocarbondioxideandwaterhasbeenrecognizedasoneofthemostpromisingmethods[7-9].NoblemetalcatalystslikePtorPdonasuitablesupporthavegenerallybeenusedasthemostactivecatalystsforVOCsoxida-tion[10,11].Aspreviouslyreported,PtandPdsupportedonaluminawasthemostactivecatalyst[12-14].However,itisfrequentlyre-portedthataluminaphasefrom酌to琢transitionwouldcauseadrasticdecreaseinthesurfacearea,andthesinteringoftheno-blemetalswouldalsoleadtothethermaldeactivationofthecat-alysts.Therefore,tofindanewseriesofcatalysts,whicharelessexpensive,highertemperature鄄resistance,andmoreefficientin1132No.7MAYingetal.：CatalyticOxidationofToluene,AcetoneandEthylAcetateonaNewPt鄄Pd/StainlessSteellowtemperatureforvolatileorganiccompoundcombustionisneeded.Thestainlesssteelwiremesh(SSWM)isreg...