Water-promoted One-step Anodic Acetoxylation of Benzene to Phenyl Acetate with High Selectivity  

由苯经水促高选择性阳极乙酰氧化法一步合成乙酸苯酯

作　　者：裴娟[1] 秦松[1] 李桂英[1] 胡常伟[1] 

机构地区：[1]四川大学化学学院绿色化学与技术教育部重点实验室,成都610064

出　　处：《Chinese Journal of Chemical Physics》2011年第2期244-248,I0004,共6页化学物理学报（英文）

基　　金：ACKNOWLEDGMENTS This work was supported by the National Natural Science Foundation of China （No.21021001, No.20502017, and No.20872102）, and the Program for Changjiang Scholars and Innovative Research Team in University （No.0846）. The Analytic and Testing Center of Sichuan University are greatly appreciated.

摘　　要：One-step anodic acetoxylation of benzene to phenyl acetate was studied in acetic acid-water solution using a one-compartment electrochemical cell in galvanostatic mode. Compared to the anhydrous system, the addition of water improved the current efficiency for the electrosynthesis of phenyl acetate. The maximum efficiency reached 4.8% with the selectivity of 96% to phenyl acetate when the electrolysis was carried out under the optimal conditions. The investigation also indicated that the concentration of phenyl acetate increased linearly in 12 h and reached 1.07 g/L with the selectivity of 95%. Cyclic voltammetry experiments showed that the adsorption of benzene at Pt anode enhanced by the addition of water was critical to the formation of phenyl acetate. An activated benzene mechanism was proposed for the anodic acytoxylation, and the analysis of gas products demonstrated that Kolbe reaction was the main side reaction.

关 键 词：Anodic acetoxylation BENZENE Acetic acid aqueous solution Phenyl acetate Mechanism 

分 类 号：O[理学]