Citethis:NewCarbonMaterials,2023,38(3):555-565DOI:10.1016/S1872-5805(23)60723-1SynthesisofCo―N―CcatalystsfromaglucosehydrocharandtheirefficienthydrogenationofnitrobenzeneYANGYu,BUYu,LONGXing-lin,ZHOUZhi-kang,WANGJing,CAIJin-jun*（SchoolofChemicalEngineering,XiangtanUniversity,Xiangtan411105,China）Abstract：Alow-cost,greencatalystfornitrobenzene(NB)hydrogenationisneededforanilineproduction.Wereporttheprepar-ationofhighly-dispersedCoparticlessupportedonN-dopedcarbonsbythehydrothermaltreatmentofglucose,followedbythepyro-lysisofamixtureofurea,glucosehydrocharandcobaltnitrateinone-pot.Theeffectofthepyrolysistemperatureonthemicrostruc-tureofthecatalystswasstudied.ResultsindicatedthattheactivityforNBhydrogenationwashighlyaffectedbythesurfacearea,Co-loadinglevelandCo-Nxcoordinationinthecatalysts.Co@NCG-800pyrolyzedat800°Cwith10%Cointheprecursorhadex-traordinaryactivityforNBhydrogenation,achievingfullconversionand99%anilineselectivityinisopropanolat100°Cand1MPaH2pressurefor2.5h.NBconversionandanilineselectivityoverthecatalystsremainedalmostunchangedaftersixrecycles,duetothestrongcoordinationbetweentheN-andCo-species.ThereactionsystemshowednotonlyahighNBactivitybutalsoagreenanddurablecatalyticprocess,witheasyoperation,easyseparationandcatalystreusability.Keywords:Biomassglucose；Hydrothermal；Co-N-Ccatalysts；Nitrobenzenehydrogenation1IntroductionReductionorhydrogenationofnitrobenzene(NB)are2mainstrategiestoproduceanilines[1–3]whichisoneofimportantintermediatesforchemicalsi.e.pesticide,dyeandpigment.Inparticular,NBhy-drogenationoverthesecatalystsisawidelyde-velopedstrategy,andalmost70%ofanilinesarepro-ducedbythismethod[4].Forinstance,sucrose-basedCo―N―CcatalystshadhighactivityinNBconver-sionusingformicacidasaH2donor[5],whichcanbemagneticallyrecoveredwithhighrecyclabilityfromtheeffectofuniformlyN-speciesandCoparticlesonthesurface.AscomparedtostoichiometricreductionwithchemicalH2,hydrogenationusingH2gasiseco-friendlyandcost-effectiveforNBconversionintoanilines[6],inw...
