%0 Journal Article
%T LevulinicacidhydrogenolysisonAl2O3-basedNi-Cubimetalliccatalysts
%A Iker Obreg¨®
%A n
%A Eriz Corro
%A Urko Izquierdo
%A Jesus Requies
%A Pedro L. Arias
%J ´ß»¯Ñ§±¨
%P 656-662
%D 2014
%R 10.1016/S1872-2067(14)60051-6
%X £¿Inexpensive¦Ã-alumina-basednickel-copperbimetalliccatalystswerestudiedforthehydrogenolysisoflevulinicacid,akeyplatformmoleculeforbiomassconversiontobiofuelsandothervaluedchemicals,into¦Ã-valerolactoneasafirststeptowardstheproductionof2-methyltetrahydrofurane.Theactivitiesofbothmonometallicandbimetalliccatalystsweretested.Theirtexturalandchemicalcharacteristicsweredeterminedbynitrogenphysisorption,elementalanalysis,temperature-programmedammoniadesorption,andtemperature-programmedreduction.Themonometallicnickelcatalystshowedhighactivitybutthehighestby-productproductionandsignificantamountsofcarbondepositedonthecatalystsurface.Thecoppermonometalliccatalystshowedthelowestactivitybutthelowestcarbondeposition.TheincorporationofthetwometalsgeneratedabimetalliccatalystthatdisplayedasimilaractivitytothatoftheNimonometalliccatalystandsignificantlylowby-productandcarboncontents,indicatingtheoccurrenceofimportantsynergeticeffects.Theinfluenceofthepreparationmethodwasalsoexaminedbystudyingimpregnated-andsol-gel-derivedbimetalliccatalysts.Astrongdependencyonthepreparationprocedureandcalcinationtemperaturewasobserved.Thehighestactivitypermetalatomwasachievedusingthesol-gel-derivedcatalystthatwascalcinedat450¡æ.Highreactionrateswereachieved;thetotallevulinicacidconversionwasobtainedinlessthan2hofreactiontime,yieldingupto96%¦Ã-valerolactone,atoperatingtemperatureandpressureof250¡æand6.5MPahydrogen,respectively.
%K Levulinicacid
%K ¦Ã-Valerolactone
%K Hydrogenolysis
%K Biomass
%K Catalyst
%K Copper
%K Nickel
%U http://www.chxb.cn/CN/abstract/abstract21296.shtml