Catalytic oxidation of ethylbenzene to acetophenone by supported molybdovanadophosphoric cobalt heteropoly acid salt

A series of supported heteropoly acid salt catalysts were prepared by impregnation method.The catalytic activity of the catalyst for the oxidation of ethylbenzene to acetophenone with H_2O_2 and the effects of reaction conditions were studied.Experimental results show that HZSM-5 as carrier,the conversion of ethylbenzene was 82.21%and the yield of acetophenone was 55.75%under the follow conditions:loading of Co,HP_2 Mo_(15) V_3 O_(62) was 30%,the amount of ethylbenzene 25mmol,catalyst 0.4g,n(ethylbenzene):n (H_2O_2) =0.125:1,m(Cat):m(KBr) =2:3,reaction time 1h,the temperature 80℃.