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OALib Journal期刊
ISSN: 2333-9721
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表面活性剂模板法制备ceo2/cuo催化剂用于富氢气氛中co优先氧化
, PP. 603-608
Keywords: ceo2,cuo,co,优先氧化,富氢气氛,模板法,表面位
Abstract:
？采用表面活性剂模板法合成了一组不同配比的ceo2/cuo催化剂，使用高分辨透射电子显微镜（hrtem）、x射线粉末衍射（xrd）、n2吸附脱附和程序升温还原（h2-tpr）等测试手段对催化剂进行了表征，并对其在富氢气氛中co优先氧化的催化性能进行了研究。结果表明，立方相萤石结构的氧化铈颗粒粒径在4nm左右，它们聚集成小簇后分散在块状氧化铜的表面；从粒径分布来看所制备的催化剂是逆负载型催化剂。催化性能测试结果显示，ceo2/cuo催化剂中有两种类型吸附位的存在，即由cuo提供的化学吸附位和由氧化铈提供的氧空位，而界面处两种类型吸附位的共存促进了co的优先氧化。
| [1] | 张志强,郑军卫.国际氢经济竞争发展态势及我国的对策[j].中国科学院院刊,2006,21(5):418-422.(zhangzhi-qiang,zhengjun-wei.competitiondevelopmenttrendofinternationalhydrogeneconomyandchina'scountermeasures[j].journalofchineseacademyofsciences,2006,21(5):418-422.)
|
| [2] | morettiae,storaroal,talonaa,lenardam,riellop,frattinir,deyusomdvm,jimenez-lopeza,rodriguez-castellone,ternerof,caballeroa,holgadojp.effectofthermaltreatmentsonthecatalyticbehaviourinthecopreferentialoxidationofacuo-ceo2-zro2catalystwithaflower-likemorphology[j].applcatalb:environ,2011,102(3/4):627-637.
|
| [3] | liuw,flytzani-stephanopoulosm.totaloxidationofcarbon-monoxideandmethaneovertransitionmetalfluoriteoxidecompositecatalysts:ⅱ.catalystcharacterizationandreaction-kinetics[j].jcatal,1995,153(2):317-332.
|
| [4] | avgouropoulosg,ioannidest,matralishk,batistaj,hocevars.cuo-ceo2mixedoxidecatalystsfortheselectiveoxidationofcarbonmonoxideinexcesshydrogen[j].catallett,2001,73(l):33-40.
|
| [5] | martínez-ariasa,hungríaab,fernández-garcíam,conesajc,munuerag.interfacialredoxprocessesunderco/o2inananoceria-supportedcopperoxidecatalyst[j].jphyschem,2004,108(46):17983-17991.
|
| [6] | luomf,majm,lujq,songyp,wangyj.high-surfaceareacuo-ceo2catalystspreparedbyasurfactant-templatedmethodforlow-temperaturecooxidation[j].jcatal,2007,246(l):52-59.
|
| [7] | hornesa,hungriaab,berap,lopezca,fernandez-garciam,martinez-ariasa,barriol,estrellam,zhoug,fonsecajj,hansonjc,rodriguezja.inverseceo2/cuocatalystasanalternativetoclassicaldirectconfigurationsforpreferentialoxidationofcoinhydrogen-richstream[j].jamchemsoc,2010,132(l):34-35.
|
| [8] | macielcg,silvatdf,profetlpr,assafem,assafjm.studyofcuo/ceo2catalystwithforpreferentialcooxidationreactioninhydrogen-richfeed(prox-co)[j].applcatala:gen,2012,431-432(l):25-32.
|
| [9] | kundakovicl,flytzani-stephanopoulosm.reductioncharacteristicsofcopperoxideinceriumandzirconiumoxidesystems[j].applcatala:gen,1998,171(l):13-29.
|
| [10] | avgouropoulosg,ioannidest.effectofsynthesisparametersoncatalyticpropertiesofcuo-ceo2[j].applcatalb:environ,2006,67(l/2):1-11.
|
| [11] | mozerts,passosfb.selectivecooxidationoncupromotedpt/al2o3andpt/nb2o5catalysts[j].intjhydrogenenergy,2011,36(21):13369-13378.
|
| [12] | jiaap,jiangsy,lujq,luomf.studyofcatalyticactivityatthecuo-ceo2interfaceforcooxidation[j].jphyschemc,2010,114(49):21605-21610.
|
| [13] | cámaraal,kubackaa,schayz,koppányz,martínez-ariasa.influenceofcalcinationtemperatureandatmospherepreparationparametersonco-proxactivityofcatalystsbasedonceo2/cuoinverseconfigurations[j].jpowersources,2011,196(9):4364-4369.
|
| [14] | avgouropoulosg,ioannidest,papadopoulouc,batistaj,hocevars,matralishk.acomparativestudyofpt/γ-al2o3,au/γ-fe2o3andcuo-ceo2catalystsfortheselectiveoxidationofcarbonmonoxideinexcesshydrogen[j].cataltoday,2002,75(1/4):157-167.
|
| [15] | chinsy,alexeevos,amiridismd.preferentialoxidationofcounderexcessh2conditionsoverrucatalysts[j].applcatala:gen,2005,286(2):157-166.
|
| [16] | valdenm,paks,laix,goodmandw.structuresensitivityofcooxidationovermodelau/tio2eatalysts[j].catallett,1998,56(l):7-10.
|
| [17] | susc,carstensjn,bellat.astudyofthedynamicsofpdoxidationandpdoreductionbyh2andch4[j].jcatal,1998,176(l):125-135.
|
| [18] | liuw,flytzani-stephanopoulosm.totaloxidationofcarbonmonoxideandmethaneovertransitionmetalfluoriteoxidecompositecatalysts:i.catalystcompositionandactivity[j].jcatal,1995,153(2):304-316.
|
| [19] | zouhb,dongxf,linwm.selectivecooxidationinhydrogen-richgasovercuo/ceo2catalysts[j].applsurfsci,2006,253(5):2893-2898.
|
| [20] | wangsp.aninvestigationofcatalyticactivityforcooxidationofcuo/cexzr1-xo2catalysts[j].catallett,2008,121(l):70-76.
|
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