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苯酚选择性加氢制备环己酮 Title:SelectiveHydrogenationofPhenolfortheProductionofCyclohexanone Abstract: Phenolisanessentialchemicalcompoundusedinvariousindustrialprocessessuchasplasticandresinproduction.However,itsdirectapplicationislimitedduetoitstoxicityandcorrosivenature.Selectivehydrogenationofphenoltocyclohexanoneoffersasustainableandenvironmentallyfriendlyrouteforthesynthesisofkeyintermediateintheproductionofadipicacid,caprolactam,andnylon. Thispaperaimstoprovideanoverviewoftheselectivehydrogenationofphenoltocyclohexanone,highlightingthekeyreactionconditions,catalysts,mechanisms,andchallengesintheprocess.Theresearchfindingsinthisfieldhaveledtothedevelopmentofefficientcatalystsandoptimizedreactionconditions,resultinginhighselectivityandconversionrates. Introduction: Phenol,chemicallyknownashydroxybenzene,isaversatilecompoundusedintheproductionofvariouschemicals,includingphenolicresins,bisphenolA,andcaprolactam.However,duetoitstoxicityandcorrosivenature,thedirectuseofphenolislimited.Byconvertingphenoltocyclohexanoneviaselectivehydrogenation,thetoxicandcorrosivepropertiesofphenolcanbeeliminated,makingitasuitableintermediatefortheproductionofadipicacid,caprolactam,andnylon. ReactionConditions: Theselectivehydrogenationofphenoltocyclohexanoneinvolvesthecontrolledadditionofhydrogengasinthepresenceofacatalyst.Thereactionistypicallyperformedatelevatedtemperaturesrangingfrom150°Cto200°Candpressuresof1-10MPa.Thereactionisexothermicandisusuallycarriedoutinacontinuousflowreactortoincreaseefficiencyandproductivity. Catalysts: Severalcatalystshavebeendevelopedfortheselectivehydrogenationofphenoltocyclohexanone.Traditionally,metalcatalystssuchasnickel,palladium,andplatinumhavebeenutilized.However,thesecatalystsoftensufferfromlowselectivityandhighcost.Morerecently,heterogeneouscatalystssuchassupportedmetalcatalysts(e.g.,Pt/Al2O3,Pd/C)andmetaloxides(e.g.,CuO/ZnO)havegainedattentionduetotheirimprovedselectivityandcost-effectiveness.Thesecatalystscanbetailoredforoptimalperformancebyadjusting