%0 Journal Article
%T TheRoleofVanadiafortheSelectiveOxidationofBenzylAlcoholoverHeteropolymolybdateSupportedAluminaCatalysts
%A Pasupulet Siva Nageswara RAO
%A Kasanneni Tirumala Venkateswara RAO
%A Potharaju S. SAI PRASAD
%A Nakka LINGAIAH
%J ´ß»¯Ñ§±¨
%P 1719-1726
%D 2011
%R 10.1016/S1872-2067(10)60279-3
%X £¿Aseriesof12-molybdophosphoricacid(MPA)supportedonV2O5dispersed¦Ã-Al2O3catalystswithdifferentvanadialoadingswerepreparedbyimpregnationandcharacterizedbyN2adsorption-desorption,X-raydiffraction,temperature-programmedreduction,insitulaserRamanspectroscopy,UV-Visdiffusedreflectancespectroscopy,scanningelectronmicroscopy,andtemperature-programmeddesorptionofNH3techniques.Theircatalyticactivitieswereevaluatedforthevaporphaseaerobicoxidationofbenzylalcohol.Thecatalystsexhibitedhighcatalyticactivityandtheconversionofbenzylalcoholdependedonthevanadiacontentwhilethecatalystwith15wt%V2O5contentshowedoptimumactivity.Thecharacterizationresultssuggestthepresenceofwell-dispersedV2O5andpartiallydisintegratedKegginionsofMPAonthesupport.InsituRamanstudiesshowedareducedMo(IV)specieswhenthecatalystswerecalcinedathightemperatures.ThehighoxidationactivityofthecatalystsisrelatedtothesynergisticeffectbetweenMPAandV2O5.
%K molybdophosphoricacid
%K vanadia
%K alumina
%K oxidation
%K benzylalcohol
%U http://www.chxb.cn/CN/abstract/abstract20554.shtml