Concentrated H_2SO_4-modified Activated Carbon Catalyst for Benzyl Reaction of Ethylbenzene and Benzyl Chloride

Activated carbon loaded concentrated sulfuric acid was used as a solid catalyst for the reaction of ethylbenzene and benzyl chloride.The effect of reaction temperature,reaction time,materials ratio and the amount of catalyst on the reaction was studied.The optimal reaction conditions were as followed when n(ethylbenzene)∶n(benzyl chloride)=3∶1,reaction temperature was 90℃,reaction time was 8h,and catalyst amount was 13.2%(relative to benzyl chloride),the o-benzyl ethylbenzene yield was 29.9%;n(ethylbenzene)∶n(benzyl chloride)=3∶1,reaction temperature was 90℃,reaction time was 9h,and catalyst dosage was 18.4%(relative to benzyl chloride),the p-benzyl ethylbenzene yield was 40.1%;n(ethylbenzene)∶n(benzyl chloride)=3∶1,reaction temperature was 90℃,reaction time was 7h,and catalyst dosage was 18.4%(relative to benzyl chloride),the m-benzyl ethylbenzene yield was 8.1%.