Ti-MOR钛硅分子筛催化甲乙酮氨氧化反应性能

催化学报 , 2013, 34(1): 243-250. doi: 10.3724/SP.J.1088.2013.20860

Ti-MOR钛硅分子筛催化甲乙酮氨氧化反应性能

丁姜宏 ^1, , 徐乐 ^2, , 徐浩 ^3, , 吴海虹 ^4, , 刘月明 ^5, , 吴鹏 ^6,

1.华东师范大学化学系,上海市绿色化学与化工过程绿色化重点实验室,上海200062

2.华东师范大学化学系,上海市绿色化学与化工过程绿色化重点实验室,上海200062

3.华东师范大学化学系,上海市绿色化学与化工过程绿色化重点实验室,上海200062

4.华东师范大学化学系,上海市绿色化学与化工过程绿色化重点实验室,上海200062

5.华东师范大学化学系,上海市绿色化学与化工过程绿色化重点实验室,上海200062

6.华东师范大学化学系,上海市绿色化学与化工过程绿色化重点实验室,上海200062

基金项目: 国家自然科学基金(20925310,U1162102) 国家科技支撑计划(2012BAE05B02) 上海市重点学科建设(B409)

关键词： Ti-MOR分子筛 , Ti-MWW分子筛 , 钛硅分子筛 , 液相氨氧化 , 甲乙酮 , 甲乙酮肟

Highly efficient synthesis of methyl ethyl ketone oxime through ammoximation over Ti-MOR catalyst

以TiCl4蒸气处理深度脱铝的丝光沸石,采用气固相同晶置换制备了含钛丝光沸石(Ti-MOR),并以H2O2作为氧化剂,考察了釜式反应器中Ti-MOR催化甲乙酮(MEK)与氨的液相氨氧化反应合成甲乙酮肟(MEKO)的性能,进而在连续淤浆床反应器中评价了Ti-MOR的稳定性和选择性.结果表明,在优化的反应条件下,Ti-MOR催化剂上MEK连续氨氧化反应的转化率和MEKO选择性分别达到95％和99％以上,优于传统的钛硅分子筛TS-1;同时,MEK转化率、MEKO选择性、催化剂耐积炭性以及稳定性等指标接近结构重排改性的Ti-MWW催化剂.

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