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Epoxidation of olefins on catalysts with highly isolated transition metal ions
Li, C
关键词Olefin Epoxidation Highly Isolated TransitIon Metal Ion Framework Atom Ion Beam implantatIon Chemical Grafting Ultraviolet Raman Spectroscopy Styrene Cyclohexene
刊名CHINESE JOURNAL OF CATALYSIS
2001-09-01
22期:5页:479-483
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
类目[WOS]Chemistry, Applied ; Chemistry, Physical ; Engineering, Chemical
研究领域[WOS]Chemistry ; Engineering
关键词[WOS]TITANIUM ; STYRENE ; TS-1
英文摘要The framework transition metal ions in microporous and mesoporous materials such as Ti-Silicalite-1 (TS-1), Fe-ZSM-5 and V-MCM-41 have been identified based on the UV resonance Raman spectroscopy. It is pointed out that the conventionally used IR (Raman) band at 960 cm(-1) is not directly associated with the framework titanium ions in TS-1, while a resonance Raman band at 1125 cm(-1) is found to be essentially due to the asymmetric vibration of framework Ti-O-Si. To mimic the highly isolated transition metal ions in the framework of zeolites, Ti/SiO2, Fe/SiO2 and V/SiO2 catalysts were prepared using ion beam implantation and Ti/SiO2 and Si/Ti/SiO2 catalysts were prepared by chemical grafting. These catalysts show pretty high activity and selectivity for the epoxidation of styrene and cyclohexene using H2O2 as the oxidant. This work further confirms that the highly isolated transition metal ions are selective and active for the selective oxidation using H2O2 (ROOH) as the oxidant and the catalysts with highly isolated transition metal ions can be prepared with alternative methods instead of zeolitic synthesis.
语种英语
WOS记录号WOS:000171867100018
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被引频次:3[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/138829
专题中国科学院大连化学物理研究所
作者单位Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
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Li, C. Epoxidation of olefins on catalysts with highly isolated transition metal ions[J]. CHINESE JOURNAL OF CATALYSIS,2001,22(5):479-483.
APA Li, C.(2001).Epoxidation of olefins on catalysts with highly isolated transition metal ions.CHINESE JOURNAL OF CATALYSIS,22(5),479-483.
MLA Li, C."Epoxidation of olefins on catalysts with highly isolated transition metal ions".CHINESE JOURNAL OF CATALYSIS 22.5(2001):479-483.
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