资源描述：
《SBA-15低温气相选择性催化氧化苯甲醇合成苯甲醛.pdf》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。
1、ChineseJOurnalofCatalysis35(2014)108-119催化学报2014年第35卷第1期1www．,chxb．cnArticleCatalyticactivityofAg／SBA一15forlow-temperaturegas-phaseselectiveoxidationofbenzylalcoholtobenzaldehydeLiangMaa，lihuaJiab，，XiangfengGuo，--，LijunXianghKeyLaboratoryofFineChemicalsofCo#egeo
2、fHeilonfljiangProvince,QiqiharUniversity,Qiqihar161006,Heilongfiang,ChinaCollegeofChemistryandChemicalEngineering,QiqiharUniversity,Oiqihar161006,Heilongjiang,ChinaARTICLEINF0ABSTRACTArticlehistory：Ag／SBA-15catalystswithdifferentAgcontentswerepreparedbyanimpregn
3、ationmethodandReceived11August2013wereusedforthegas-phaseselectiveoxidationofbenz：'ylalcoholtobenzaldehydewith02astheAccepted22September2013oxidant．ThesecatalystswerecharacterizedusingN2adsorption·desorption，X-raydiffraction,scan-，Published20January2014ningelect
4、ronmicroscopy,high‘resolutiontransmissionelectronmicroscopy,inductivelycoupledplasmamassspectrometry,andX-rayphotoelectronspectroscopy．TheeffectsofAgloading,reac-tiontemperature，andweighthourlyspacevelo~tryofbenzylalcoholonthecatabytLicperformanceKeywords：werein
5、vestigated．Theresultsshowedt}latAgwassuccesslFLillyincorporatedintothemesoporousSilverchannelsofSBA．15andwelldispersedonthesurfatceasaresultofthenanoconfinementeffectofSBA．15Low‘temperaturegas·phaseoxidationSBA-15，whichincreasedthespecificsurfaceareaoftheactivec
6、omponents．Moreover．Ag／SBA．-15hadaunfl1cwmporesize，awallofthicknessof3—5nm，andahighspecificsurl白tceareaof411-541Benzylalcoholm：-'／g．Thecatalyticactivi~ofAg／SBA-15forthegas·phaseselectiveoxidationofbenzylalcoholtoBenzaldehydebenzalde!hydewasenhancedbyoxygenspillov
7、erofnucleophilicoxygenspeciesfromtheAgnano—particlestotheSBA-15surfmce,The5．3％Ag／SBA-15exhibitedexcellentlow-temperaturecatalyticproperties；whenthereactiontemperaturewas220。C，theconversionofbenz,alcoholandtheselectivityforbenzaldehlydereached87％and95％，respective
8、ly．At240。C，thecatalystdisplayedthebestcatahy1：icproperties，achievingabenzylalcoholconversionof94％andbenzaldehydeselec-tivicyof97％，whichremainedalmostconstantat240—300
