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A Thorough Investigation of the Active Titanium Species in TS-1 Zeolite by In Situ UV Resonance Raman Spectroscopy
Guo, Qiang1,2; Sun, Keju1; Feng, Zhaochi1; Li, Guanna1; Guo, Meiling1,2; Fan, Fengtao1; Li, Can1
关键词Active Centers Epoxidation Raman Spectroscopy Titanium Zeolites
刊名CHEMISTRY-A EUROPEAN JOURNAL
2012-10-01
DOI10.1002/chem.201201319
18期:43页:13854-13860
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences
类目[WOS]Chemistry, Multidisciplinary
研究领域[WOS]Chemistry
关键词[WOS]METAL-CATALYZED EPOXIDATION ; HYDROGEN-PEROXIDE ; AB-INITIO ; TI-SILICALITE ; STYRENE OXIDATION ; ORGANIC HYDROPEROXIDES ; SOLVENT ; TI(IV) ; REACTIVITY ; DFT
英文摘要A thorough investigation of the active titanium species in TS-1 zeolite was conducted by in situ UV resonance Raman spectroscopy combined with UV/Vis diffuse reflectance spectroscopy, DFT calculations, and epoxidation experiments. A new titanium species was identified with a characteristic Raman band at 695 cm-1 when excited at the 266 nm laser line. It is shown that the newly found titanium species is active in the epoxidation reactions in addition to the tetrahedrally coordinated titanium species. However, the acidity of the new titanium species could catalyze the ring-opening reactions of the epoxy products. It results in a lower selectivity toward the epoxy products relative to that of the tetrahedrally coordinated titanium species. The side reaction can be suppressed by the addition of a weak basic reagent.
语种英语
WOS记录号WOS:000310066700036
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被引频次:41[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/321008/138027
专题中国科学院大连化学物理研究所
作者单位1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
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Guo, Qiang,Sun, Keju,Feng, Zhaochi,et al. A Thorough Investigation of the Active Titanium Species in TS-1 Zeolite by In Situ UV Resonance Raman Spectroscopy[J]. CHEMISTRY-A EUROPEAN JOURNAL,2012,18(43):13854-13860.
APA Guo, Qiang.,Sun, Keju.,Feng, Zhaochi.,Li, Guanna.,Guo, Meiling.,...&Li, Can.(2012).A Thorough Investigation of the Active Titanium Species in TS-1 Zeolite by In Situ UV Resonance Raman Spectroscopy.CHEMISTRY-A EUROPEAN JOURNAL,18(43),13854-13860.
MLA Guo, Qiang,et al."A Thorough Investigation of the Active Titanium Species in TS-1 Zeolite by In Situ UV Resonance Raman Spectroscopy".CHEMISTRY-A EUROPEAN JOURNAL 18.43(2012):13854-13860.
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