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In-situ P-31 MAS NMR probing of the active centers in Ti silicalite molecular sieve
Zhuang, Jianqin1,2; Han, Xiuwen2; Bao, Xinhe2
关键词Ts-1 Zeolite Trimethylphosphine Active Center P-31 Mas Nmr
刊名CATALYSIS COMMUNICATIONS
2015-03-05
DOI10.1016/j.catcom.2015.01.014
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
关键词[WOS]RESONANCE RAMAN-SPECTROSCOPY ; TS-1 ZEOLITE ; CATALYSTS ; ACIDITY ; TITANIUM
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.
语种英语
WOS记录号WOS:000350095100017
引用统计
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/146036
专题中国科学院大连化学物理研究所
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
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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.
APA Zhuang, Jianqin,Han, Xiuwen,&Bao, Xinhe.(2015).In-situ P-31 MAS NMR probing of the active centers in Ti silicalite molecular sieve.CATALYSIS COMMUNICATIONS,62,75-78.
MLA Zhuang, Jianqin,et al."In-situ P-31 MAS NMR probing of the active centers in Ti silicalite molecular sieve".CATALYSIS COMMUNICATIONS 62(2015):75-78.
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