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题名: Effect of acidity in TS-1 zeolites on product distribution of the styrene oxidation reaction
作者: Zhuang, JQ;  Ma, D;  Yan, ZM;  Liu, XM;  Han, XW;  Bao, XH;  Zhang, YH;  Guo, XW;  Wang, XS
关键词: acidity ;  zeolites ;  styrene
刊名: APPLIED CATALYSIS A-GENERAL
发表日期: 2004-02-10
DOI: 10.1016/j.apcata.2003.06.002
卷: 258, 期:1, 页:1-6
收录类别: SCI
文章类型: Article
项目归属: 502
产权排名: 1;1
WOS标题词: Science & Technology ;  Physical Sciences ;  Life Sciences & Biomedicine
类目[WOS]: Chemistry, Physical ;  Environmental Sciences
研究领域[WOS]: Chemistry ;  Environmental Sciences & Ecology
英文摘要: The role of Bronsted acidity of titanium silicalite zeolite (with different ratios of Si/Ti) in oxidation reactions of styrene has been investigated and discussed. For zeolites with Si/Ti > 42, most of the titanium is in the zeolite framework. These framework titanium species, which act both as the isolated titanium centers and as Bronsted acidity centers (together with the Bronsted acidity produced by the tetrahedral aluminum impurity introduced during synthesis), can catalyze both the epoxidation and the succeeding rearrangement reactions, thus promoting the formation of phenylacetaldehyde. With an increase in the titanium content of the zeolite, titanium will tend to stay outside the zeolite lattice, except for the TiOx nanophases which can be occluded in the zeolite channels or on the external surface. These non-framework titanium species are favorable for the carbon-carbon bond scission, leading to the production of additional benzaldehyde. The catalytic performances of these zeolites with different Si/Ti ratios are correlated here with their structural information by using solid-state NMR and UV-Vis methods. (C) 2003 Elsevier B.V. All rights reserved.
关键词[WOS]: SOLID-STATE NMR ;  SI-29 MAS NMR ;  TITANIUM SILICALITE ;  HYDROGEN-PEROXIDE ;  EPOXIDATION ;  SITES ;  TRIMETHYLPHOSPHINE ;  PROBE ;  H2O2
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000188968200001
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/82639
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.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Dalian Univ Technol, State Key Lab Fine Chem, Dalian 116012, Peoples R China

Recommended Citation:
Zhuang, JQ,Ma, D,Yan, ZM,et al. Effect of acidity in TS-1 zeolites on product distribution of the styrene oxidation reaction[J]. APPLIED CATALYSIS A-GENERAL,2004,258(1):1-6.
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