钛硅分子筛催化制备N-氧化吡啶工艺研究  

Preparation of N-Oxidized Pyridine Catalyzed by TS-1 Zeolite Catalyst

作　　者：王冬林[1] 曾昌凤[1] 张利雄[1] 徐南平[1] 

机构地区：[1]南京工业大学化学化工学院

出　　处：《化学反应工程与工艺》2006年第3期220-224,共5页Chemical Reaction Engineering and Technology

摘　　要：以钛硅分子筛为催化剂,以吡啶、双氧水为原料催化氧化合成 N-氧化吡啶。实验考察催化剂用量、吡啶与双氧水配比、反应温度、反应时间等对反应结果的影响。确定了较佳的工艺操作条件,即在TS-1分子筛催化剂作用下,催化剂与吡啶的质量比为1∶10,反应温度为80℃,吡啶与双氧水的摩尔比为1∶2,双氧水分多次滴加,反应时间为6 h。在此操作条件下,吡啶氧化转化率可达92%以上,N-氧化吡啶选择性可达97%。N-oxidized pyridine was synthesized from the oxidation of pyridine with TS-1 as catalyst. The influence of catalyst amount, the amount of H2O2, reaction temperature, and reaction time on conversion and selectivity were investigated. The optimal parameters for the oxidation of pyridine were obtained from the experimental results, which were： catalyst/pyridine=1 ： 10 （mass）, pyridine/H2O2 =1 ： 2 （mol）, optimal reaction temperature of 80℃ with stirring and reaction time of 6 h. Under the optimal experimental condition, the highest conversion and selectivity were obtained as 92% and 97%, respectively.

关 键 词：钛硅分子筛 吡啶 双氧水 N-氧化吡啶 催化氧化 

分 类 号：O621[理学—有机化学]