铂论文：pt系纳米新结构材料的合成及其在催化领域中的应用

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1、铂论文：Pt系纳米新结构材料的合成及其在催化领域中的应用【中文摘要】纳米材料的合成及其应用是现在学术领域的热门研究方向。本论文以金属Pt为构建纳米材料的主要组分,合成出一系列Pt基纳米材料,并重点研究了它们对氧化反应和【英文摘要】Nanochemistryisanexponentiallygrowingresearchfieldinmodernsciencethatinvolvesthesynthesisandapplicationofnanomaterials.Inthisthesis,wepresen

2、tourresearchonthedevelopmentofnovelplatinum(Pt)basednanomaterialsasthecatalystsfortheoxidationandreductionreactions.Nanomaterialssynthesis:FromreviewingthepreparationofFePt,PtandPt@Fe2O3nanomaterials,wesynthesizedaseriesofwell-defined,homogeneousPlatinumb

3、asednanomaterialsbytherm-decompositionandthesenanomaterialswerecharacterizedby(HR)TEM,XRDandEDS.1.Carbonmonoxide(CO)oxidationundermildcondition:ThecatalyticactivityofpreparedPtbasednanomaterialswasinvestigatedintheoxidationofCOundermildreactioncondition.T

4、hesecatalystsshowedobviouscatalyticactivitywhenthetemperaturewasraisedto50oCandthetotallyconversioncouldbeobtainedat110oC.2.Directhydrogenationofnitro-aromaticsandone-potamidationwithcarboxylicacidoverPtnanowires:Ptnanowiresweredemonstratedasheterogeneous

5、catalystfornitro-aromaticshydrogenationwithquantitiveconversionsatmildcondition.Whileusingcarboxylicacidsassolventunder1barhydrogenatmosphereat100oC,nitro-aromaticsweresuccessfullyconvertedtoamidewithsatisfiedconversionandselectivity.ThePtcatalystalsoshow

6、edhighcatalyticactivityandstability.Noobviouscatalyticactivitylosewasobservedafterseveraltimerecycling.Thismethodforhydrogenationofnitro-aromaticsanddirectamidationofnitro-aromaticswithcarboxylicacidsaresimple,economical,environmentalbenignandhavepractica

7、ladvantagesforsynthesisofaminesandimideswithoutproductionoftoxicby-products.3.OxidationofalcoholandalkenewithPtbasednanomaterials:VariousPtbasednanomaterialswerealsoinvestedascatalystsforselectiveoxidationofalcoholandalkene.Thereactionconditionsastemperat

8、ure,solvent,pressurewereoptimized.ThisobservationwasdemonstratedthatourPtbasednanomaterialsshoweddualcatalyticabilitiesforreductionandoxidationreactions.【关键词】铂纳米材料氧化氢化酰胺【英文关键词】platinumnanomaterialsoxidationreduction