Catalytic oxidation of phenols by cobalt phthalocyanine supported activated carbon fibers

In order to remove refractory phenols,a novel catalytic oxidation system,consisting of activated carbon fibers supported with cobalt phthalocyanine(CoPc-ACF) and H2O2 as oxidant,has been developed,which gives full play to the adsorption of ACF and the catalysis of cobalt phthalocyanine.The oxidative removal of p-nitrophenol,p-methoxyphenol,and chlorophenol were investigated in this catalytic oxidation system.The results showed that more than 97% of these phenols were removed in 5 h under the condition of CoPc-ACF 0.4 g,H2O2 100 mmol/L,25 ℃ and concentration of substituted phenols from 0.2 mmol/L to 0.5 mmol/L,which were identified by UPLC.The type and number of substituted group makes no difference to catalytic effect.In addition,the possible catalytic oxidation degradation mechanism was proposed on the basis of the intermediate products formed in the catalytic oxidation of substituted phenols,which were identified by GC-MS methods.