A Thorough Investigation of the Active Titanium Species in TS-1 Zeolite by In Situ UV Resonance Raman Spectroscopy

	A Thorough Investigation of the Active Titanium Species in TS-1 Zeolite by In Situ UV Resonance Raman Spectroscopy
	Guo, Qiang 1,2; Sun, Keju 1; Feng, Zhaochi 1; Li, Guanna 1; Guo, Meiling 1,2; Fan, Fengtao 1; Li, Can 1
刊名	chemistry-a european journal
	2012-10-01
卷号	18 期号:43 页码:13854-13860
关键词	active centers epoxidation Raman spectroscopy titanium zeolites
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.
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
收录类别	SCI
语种	英语
WOS记录号	WOS:000310066700036
公开日期	2015-11-10
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/138027]
专题	大连化学物理研究所_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
推荐引用方式 GB/T 7714	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.