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题名: In-situ P-31 MAS NMR probing of the active centers in Ti silicalite molecular sieve
作者: Zhuang, Jianqin1, 2;  Han, Xiuwen2;  Bao, Xinhe2
关键词: TS-1 zeolite ;  Trimethylphosphine ;  Active center ;  P-31 MAS NMR
刊名: CATALYSIS COMMUNICATIONS
发表日期: 2015-03-05
DOI: 10.1016/j.catcom.2015.01.014
卷: 62, 页:75-78
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Physical
研究领域[WOS]: Chemistry
英文摘要: The investigation of the active centers in titanium zeolite was conducted by a probe reaction, the oxidation of trimethylphosphine. The different sites of TS-1 zeolite can be clearly distinguished through P-31 solid-state MAS NMR spectra of adsorbed trimethylphosphine. The results showed that only the trimethylphosphine bound to the coordinate-unsaturated framework Ti sites and the distorted tetrahedral Ti sites ofTS-1 zeolite could be easily oxidized by urea hydrogen peroxide. Diffuse Reflectance UV-Vis and Si-29 MAS NMR spectra further confirmed that the titanium peroxide species (TiOOH), which is formed through the solid-solid interaction between urea-H2O2 and TS-1 zeolite, could be catalytic active centers during the oxidation of trimethylphosphine. (C) 2015 Elsevier B.V. All rights reserved.
关键词[WOS]: RESONANCE RAMAN-SPECTROSCOPY ;  TS-1 ZEOLITE ;  CATALYSTS ;  ACIDITY ;  TITANIUM
语种: 英语
WOS记录号: WOS:000350095100017
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/146036
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.CUNY Coll Staten Isl, Dept Chem, Staten Isl, NY 10314 USA
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China

Recommended Citation:
Zhuang, Jianqin,Han, Xiuwen,Bao, Xinhe. In-situ P-31 MAS NMR probing of the active centers in Ti silicalite molecular sieve[J]. CATALYSIS COMMUNICATIONS,2015,62:75-78.
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