Hydroxylation Of Benzene To Phenol Over FeCl₃Colliod、FeCl₃Colliod/AC Catalysts

This topic based on the latest research results of the hydroxylation of benzene to phenolat home and abroad, changing the traditional research ideas, selecting the FeCl₃colloid、FeCl₃colloid/PVP catalyst, while in-depth analysis of the catalytic reaction mechanism and catalystactivity, and for the characteristics of the catalyst under different conditions and theinfluencing factors on the experiment conducted a comprehensive study.1.The effort of FeCl₃colloid catalyst and FeCl₃colloid/PVP catalyst on the reaction ofhydroxylation of benzene to phenol were studied. The structure and morphology of thecolloidal catalysts were characterized by means of X-ray diffraction （XRD） and transmissionelectron microscopy （TEM）. The result shows, The FeCl₃colloid/PVP catalyst has the higheractivity, under the optimized reaction condition:60℃,6h, the dosage of catalyst1.3ml, weobtained69%benzene conversion and100%selectivity of phenol.2.The effort of activated carbon supported FeCl₃colloid catalyst on the reaction of thehydroxylation of benzene to phenol were studied. Changing the synthesis condition, and themodification of activated carbon, high activity and recyclable catalyst were prepared. Thesamples are characterized by XRD、BET、FTIR、Boehm titration、SEM and TEM. Best resultswere obtained, conversion of benzene50.2%, selectivity of phenol99.1%, under theoptimized reaction conditions: catalyst0.38g, reaction temperature60℃, reaction time6h,solvent CH3CN5ml.