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1、烟台大学硕士学位论文（2）考察了共沉淀（CP）法、改进的沉积沉淀（M-DP）法、溶胶（Sol）法三种制备方法对Au-Cu2O催化剂催化性能的影响，得出催化性能优异顺序为：M-DP>CP>Sol，确定了改进的沉积沉淀法是更好的Au-Cu2O催化剂的制备方法。（3）XRD和SEM测试结果表明：M-DP法制备的Au-Cu2O催化剂，纳米Au颗粒并没有进入到Cu2O晶体晶格里面，而是附着在氧化亚铜载体的表面，很好的保持了特定形貌Cu2O的晶体结构和形貌。（4）Cu2O形貌对催化性能有一定的影响，但是形貌不是催化剂催化性能的关键因素。3++
2、3+++2++2+Au与Cu发生（Au+Cu→Au+Cu）电子传递反应，得到的Cu、Cu的混合状态，对Au-CuOx的催化性能具有促进作用，是催化活性的关键所在。关键词：富氢气氛；一氧化碳；选择氧化；Au-Cu催化剂；Cu2O形貌；催化性能II万方数据烟台大学硕士学位论文AbstractThepolymer-electrolytemembranefuelcell(PEMFC)utilizeshighpurityhydrogenasafuel,andhydrogenisusuallyproducedbysteamreformingo
3、fmethanolandotherhydrocarbons.However,theanodeofPEMFCispronetobepoisonedbyCOcontainedinthereformedgas,resultinginthedamageofbatteryperformanceseriously.Preferentialoxidation(PROX)hasbeenrecognizedasoneofthemostpromisingandcosteffectivemethodstoremovethesmallamountofCO
4、inhydrogen-richgas.Thus,highactivityandselectivityarethekeyfactorstochooseasuitablePROXcatalystthatconvertCOcompletelywithminimizingorwithoutconsumptionofhydrogen.SupportedgoldcatalystshavewellknownambienttemperatureactivityforCOoxidationandasagoodchoiceforthePROXsyst
5、em.PreviousstudieshaveshowedthatthereweresomewhatlowselectivityandpoorstabilityforsupportedAucatalystinCO-PROXreaction,however,theeffectivecombinationofAuandCucanpresentasynergisticeffect,notonlyenhancetheactivityandselectivitybutalsoimprovethestability.Basedonthis,in
6、thisthesiswestudiedthecatalyticperformanceofAu-CucompositecatalystsforCO-PROXreaction.Inthefirstpartofthisthesis,aseriesofAu-Cu-FLAcatalysts,thereinAuasactiveingredient,CuaspromoterdepositedontothecompositemetaloxidecarrierFeLaOx-Al2O3pre-prepared,werepreparedbymodifi
7、eddeposition-precipitationmethod.ThecatalystswerecharacterizedbyXRD,BET,H2-TPR,XPSandTEMtechniques,andinvestigatedtheircatalyticactivityforCO-PROXreactioninhydrogen-richgas.Themainconclusionsaredrawnasfollows:(1)EffectsoftheadditionofseveralMn,Ni,Cu,Zntransitionmetals
8、ontheperformanceofAu-FLAforCO-PROXwereinvestigated.ItwasfoundthatintroducingCuintoAu-FLAcatalystcanenhancecatalyticperforman
