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1、AppliedCatalysisA:General222(2001)427437AdvancesinthecatalysisofAunanoparticlesMasatakeHarutaa,∗,MasakazuDatébaResearchInstituteforGreenTechnology,InstituteofAdvancedIndustrialScienceandTechnology,16-1Onogawa,Tsukuba305-8569,JapanbSpecialDivisionofGreenLifeTechnology,InstituteofAdvancedIndustria
2、lScienceandTechnology,1-8-31Midorigaoka,Ikeda563-8577,JapanAbstractGoldcatalystshaverecentlybeenattractingrapidlygrowinginterestsduetotheirpotentialapplicabilitiestomanyreactionsofbothindustrialandenvironmentalimportance.ThisarticlereviewsthelatestadvancesinthecatalysisresearchonAu.Forlow-temper
3、atureCOoxidationmechanisticargumentsaresummarized,focusingonAu/TiO2togetherwiththeeffectofpreparationconditionsandpretreatments.ThequantumsizeeffectisalsodiscussedintheadsorptionandreactionofCOoverAuclusterssmallerthan2nmindiameter.Inaddition,recentdevelopmentsareintroducedintheepoxidationofprop
4、ylene,water-gas-shiftreaction,hydrogenationofunsaturatedhydrocarbons,andliquid-phaseselectiveoxidation.TheroleofperimeterinterfacebetweenAuparticlesandthesupportisemphasizedasauniquereactionsiteforthereactantsadsorbedseparately,oneonAuandanotheronthesupportsurfaces.©2001ElsevierScienceB.V.Allrig
5、htsreserved.Keywords:Goldcatalysts;COoxidation;Propyleneepoxidation;Water-gas-shiftreaction;Hydrogenation;Liquid-phaseoxidation1.IntroductionFig.1showsthattheannualnumbersofresearcharticlesrelatedtothecatalysesofAuappreciablyGoldhaslongbeenregardedasapoorlyactivecat-increasedinthelastdecade,espe
6、ciallyveryrapidlyalyst.Arecenttheoreticalcalculationhasexplainedfrom1997.Acitationdatabaseservice,TheWebofwhythesmoothsurfaceofAuisnobleinthedissocia-Science,providedbyInstituteforScientificInfor-tiveadsorptionofhydrogen[1].However,whenAuismation(ISI,http://www.isinet.com/isi),wasusedfordeposited
7、asnanoparticlesonmetaloxidesbymeanssearchthroughthekeywordsofgold,catalysis,ofco-precipitationanddepositionprecipitationtech-catalyst(s),catalytic(al),catalyticallyandcon-niques,itexhibitssurprisinglyhighcatalyticactivityjug
