Production of Hydrogen from Ethanol Review of Reaction Mechanism and Catalyst Deactivation

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1、Reviewpubs.acs.org/CRProductionofHydrogenfromEthanol:ReviewofReactionMechanismandCatalystDeactivation†‡‡,§LisianeV.Mattos,GaryJacobs,BurtronH.Davis,andFabioB.Noronhá*†DepartamentodeEngenhariaQuímicaedePetroleo,UniversidadeFederalFluminense(UFF),RuaPassodaPátria,́156-CEP24210-240,Niteroi,RJ,Braz

2、iĺ‡CenterforAppliedEnergyResearch,TheUniversityofKentucky,2540ResearchParkDrive,Lexington,Kentucky40511,UnitedStates§InstitutoNacionaldeTecnologia−INT,Av.Venezuela82,CEP20081-312,RiodeJaneiro,Brazil1.INTRODUCTIONThelightalcoholethanolisanimportantcandidateasachemicalcarrierofhydrogen,theproducti

3、onofwhichisusefulinarangeoffuelcellapplications.Notonlyisitlesshazardousthanmethanolbutitcanbeproducedfromavarietyofbiomasssources.ItsusecouldconceivablyleadtoadecreaseinCO2emissions.Currently,bioethanolisproducedbythefermenta-tionofsugarcane,corngrains,andotherstarch-richmaterials,CONTENTSandisc

4、onsideredtobeamaturetechnology.Recentresearchhasfocusedonproducingbioethanolfromlignocellulosic1.Introduction4094biomass,theso-calledsecond-generationbioethanol.Ethanol2.ReactionMechanisms4095productionfromlignocellulosewouldopenupthepossibility2.1.CatalyticTests4095fortheutilizationofdiverseandl

5、ow-costbiomass,suchas2.1.1.ReactionPathwaysNetwork4095agriculturalwastesandforestryresidues(e.g.,straw,grasses,2.1.2.EffectofReactionConditionsandChoicecornstover,andwood);inthisway,foodcouldbeproducedofCatalystontheReactionPathway40951alongwithbioethanolfromagriculturalsources.2.1.3.ReactionMech

6、anisminAqueous-PhaseAsdemonstratedbyrecentreviews,hydrogenproductionviaReformingandReforminginSuper-thecatalyticsteamreforming(SR)ofethanolhasbeencriticalWater40982−5extensivelystudied.Thesereviewssummarizethecurrent2.2.SpectroscopicandThermalDesorptionstatusofthistechnology.Theyincludethechemica

7、lprocessesStudies4099forhydrogenproduction(e.g.,SR,watergasshift(WGS),2.2.1.FundamentalMechanisticStudiesonpreferentialoxidationofCO(PROX),andmethanation),TransitionMetalSurfaces4099reactionconditions,catalysts(e.g.,ox