掺氮纳米炭球担载高分散钯纳米催化剂的制备及其苯甲醇氧化性能.pdf

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1、ChineseJournalofCatalysis36(2015)612—619催化学报2015年第36卷g4期1w'wv~．chxb．cnavaiIableatwww．sciencedirect．com’：j：，ScienceDirectjournaIhomePage：www．eIsevier．com／Iocate／chnjcArticleUniformlydispersedPdnanoparticlesonnitrogen—dopedcarbonnanosp’herest’oraerobicbenzy’lalcoholoxXildatilonYanHao，

2、ShuaiWang，QiangSun，LeiShi，An—HuiLuStateKeyLaboratoryofFineChemicals,DepartmentofChemicalEngineering,DalianUniversityofTechnology,Dalian11602~Liaoning,ChinaARTlCLEINF0ABSTRACTArticlehistory：MaintainingthedispersionandstabilityofsupportedmetalsisstillanimportantissueforsolidReceived6N

3、ovember2014catalyststhatsuferfromaggregationorleaching．WereportaneasyprocedureforthepreparationAccepted22December20140fPdnanoparticlessupportedoncarbonnanospheresbythedirectpyrolysisofthemetalprecursorPublished20April2015impregnatedonpolybenzoxazine-basedpolymernanospheres．Thecomple

4、xationinteractionbe—tweenthemeta1andsupportwasbeneficialforthedispersionandstabilityofthePdnanoparticles．Pdnanoparticleswithanaveragesizeof3nmwereuniformlydispersedonthecarbonnanospheresKeywords：afterathermaltreatmentat500。Cunderargonflow．ThecatalystwasevaluatedforaerobicbenzylPalla

5、diumalcoho1oxidationundermildconditionswithoutusingabaseadditive．InordertogetmostlyouterCarbonnanospheresurfacePdnanoparticles，thecatalystpreparationconditionswereinvestigatedbyvaryingthemetalAlcoholoxidationloadingandloadingtime．ThehighestcatalyticactivityreachedaTOFof690h一whenthec

6、atalystRecyclabilitywaspreparedundertheoptimizedconditions．Thecatalystalsoshowedgoodrecyclabilityandcanbeeasilyregeneratedbycalcinationat2O0。C．@2015．DalianInstituteofChemicalPhysics，ChineseAcademyofSciences．PublishedbyElsevierB．V．AIlrightsreserved1．Introductionamajorcauseofcatalystd

7、eterioration『11，12]．Thus，thereisaneedforthedesignofPdnanocatalystswithhighdispersionBenzaldehydeisanimportantintermediateinorganicandexcellentactivityandstabilityforbotheconomicandenvi—synthesiswhichiswidelyusedincosmetics，perfumes，food，ronmentalreasons．andthepharmaceuticalindustry[

8、1】．Theselectiveoxid