Enhancement of Alkene Epoxidation Activity of Titanosilicates by Gas-Phase Ammonia Modification

Enhancement of Alkene Epoxidation Activity of

Titanosilicates by Gas-Phase Ammonia

Modification

张里艳;徐乐;孙晶晶;蒋金刚;刘月明;吴海虹;吴鹏

【期刊名称】《中国化学（英文版）》 【年(卷),期】2012(030)009

【摘要】Novel ammonia-treated titanosilicates have been prepared by heating the samples of Ti-MWW, TS-l and Ti-Beta under pure ammonia gas flow at 673 K for a period of time. The ammonia modification improved their catalytic performance in liquid-phase oxidations. Especially, the catalytic activities of ammonified Ti-MWW, N-Ti-MWW, were enhanced greatly in the epoxidation of 1-hexene with H2O2. The reason that the ammonia treat- ment played such an important role in post-modification of titanosilicate was investigated in details. In comparison to the parent Ti-MWW catalyst, N-Ti-MMW was more robust and produced less coke in oxidation reactions. 【总页数】7页(2205-2211)

【关键词】钛硅酸盐;氨处理;烯烃环氧化;反应活性;修改;环氧化反应;气相;催化性能

【作者】张里艳;徐乐;孙晶晶;蒋金刚;刘月明;吴海虹;吴鹏

【作者单位】Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Department of Chemistry, East China Normal University,