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题名: Hierarchical zeolites prepared by organosilane templating: A study of the synthesis mechanism and catalytic activity
作者: Koekkoek, Arjan J. J.1;  Tempelman, Christiaan H. L.1;  Degirmenci, Volkan1;  Guo, Meiling2;  Feng, Zhaochi2;  Li, Can2;  Hensen, Emiel J. M.1
关键词: Hierarchical ZSM-5 ;  Zeolite synthesis ;  Organosilane ;  Acid activity ;  Benzene oxidation
刊名: CATALYSIS TODAY
发表日期: 2011-06-20
DOI: 10.1016/j.cattod.2010.12.033
卷: 168, 期:1, 页:96-111
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Applied ;  Chemistry, Physical ;  Engineering, Chemical
研究领域[WOS]: Chemistry ;  Engineering
英文摘要: The crystallization of hierarchical ZSM-5 in the presence of the organosilane octadecyl-dimethyl-(3-trimethoxysilyl-propyl)-ammonium chloride as the mesoporogen was investigated as a function of time and temperature. The synthesis by this method proceeds in two steps. The rapid formation of a predominantly amorphous disordered mesoporous aluminosilicate precursor phase is followed by the formation of globular highly mesoporous zeolite particles involving dissolution of the precursor phase. It is difficult to completely convert the initial phase into the final hierarchical zeolite. This limits the amount of aluminium built into the MFI network and the resulting Bronsted acidity. In the presence of iron, more crystalline hierarchical zeolite is obtained. These Fe-containing zeolites are excellent catalysts for the selective oxidation of benzene to phenol. Their hierarchical pore structure leads to higher reaction rates due to increased mass transfer and increased catalyst longevity despite more substantial coke formation. (C) 2011 Elsevier B.V. All rights reserved.
关键词[WOS]: BENZENE HYDROXYLATION ;  RAMAN-SPECTROSCOPY ;  MESOPOROUS ZEOLITES ;  MOLECULAR-SIEVE ;  ZSM-5 ZEOLITES ;  NITROUS-OXIDE ;  MFI ZEOLITES ;  GENERATION ;  FRAMEWORK ;  PHENOL
语种: 英语
WOS记录号: WOS:000291033300012
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/142610
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.Eindhoven Univ Technol, Schuit Inst Catalysis, NL-5600 MB Eindhoven, Netherlands
2.Chinese Acad Sci, State Key Lab Catalysis, Dalian Inst Chem Phys, Dalian 116023, Peoples R China

Recommended Citation:
Koekkoek, Arjan J. J.,Tempelman, Christiaan H. L.,Degirmenci, Volkan,et al. Hierarchical zeolites prepared by organosilane templating: A study of the synthesis mechanism and catalytic activity[J]. CATALYSIS TODAY,2011,168(1):96-111.
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