Co-MCM-41催化氧化二苯甲烷制备二苯甲酮的反应条件

Catalytic Oxidation of Diphenylmethane to Benzophenone

系统地研究了Co掺杂MCM-41用于液相催化氧化二苯甲烷的反应,并探讨了不同溶剂及溶剂用量、反应时间、反应温度、催化剂用量等对二苯甲烷氧化反应的影响;并得出较优的反应条件:m(二苯甲烷)∶m(催化剂)=10∶1;V(二苯甲烷)∶V(冰醋酸)=1∶10;温度为100℃,时间为10 h,二苯甲烷的转化率21%,二苯甲酮的选择性95.8%。

Cobalt doped MCM-41 was used to catalyze the oxidation of diphenylmethane to benzophenone. The effect of solvent, amount of acetic acid glacial, reaction time, catalyst concentration, and reaction temperature on the catalyst performance were examined in order to optimize the conversion of diphenylmethane and the selectivity of benzophenone. A 95.8% selectivity to benzophenone was obtained at 21% conversion of diphenylmethane under the optimum reaction conditions ： m （diphenylmethane） ： m （catalyst） = 1 ： 10, V（ diphenylmethane）： V（acetic acid glacial） = 1：10, reaction temperature = 100℃ and reaction time = 10 h.