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题名: Mesoporous alumino silicates synthesized with single molecular precursor (sec-BUO)(2)AlOSi(OEt)(3) as aluminum source
作者: Li, Y;  Yang, QH;  Yang, H;  Li, C
关键词: mesoporous aluminosilicates ;  void defects ;  low Si/Al ratios ;  acidity
刊名: MICROPOROUS AND MESOPOROUS MATERIALS
发表日期: 2006-04-15
DOI: 10.1016/j.micromeso.2005.11.021
卷: 91, 期:1-3, 页:85-91
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 ;  Nanoscience & Nanotechnology ;  Materials Science, Multidisciplinary
研究领域[WOS]: Chemistry ;  Science & Technology - Other Topics ;  Materials Science
英文摘要: Single molecular precursor bis(sec-butoxy)aluminoxytriethoxysilane [(sec-BUO)(2)AlOSi(OEt)(3)] was used as aluminum source for the synthesis of mesoporous aluminosilicates with low Si/Al ratios from 1.0 to 10.0 via a template-assisted method. The samples with Si/ Al ratios of 1.0 and 3.0 have wormhole-like pore structure, while the samples with Si/Al ratios of 5.0 and 10.0 have ordered hexagonal mesoporous structures with extensive void defects amid the nanochannels. IR spectra of pyridine adsorption and NH3-TPD characterizations suggest that the mesoporous alummosilicates have both Bronsted and Lewis acid sites with medium strength. The amounts of acid sites of the mesoporous aluminosilicates do not run parallel with the concentration of the tetrahedrally coordinated aluminum in the mesoporous framework. (c) 2005 Elsevier Inc. All rights reserved.
关键词[WOS]: TRIS(TERT-BUTOXY)SILOXY COMPLEXES ;  ALUMINOSILICATE MESOSTRUCTURES ;  THERMAL-STABILITY ;  SIEVE MCM-41 ;  CATALYSTS ;  ACIDITY ;  SURFACTANT ;  MECHANISM ;  NIOBIUM ;  MULLITE
语种: 英语
WOS记录号: WOS:000236656400012
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/140048
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

Recommended Citation:
Li, Y,Yang, QH,Yang, H,et al. Mesoporous alumino silicates synthesized with single molecular precursor (sec-BUO)(2)AlOSi(OEt)(3) as aluminum source[J]. MICROPOROUS AND MESOPOROUS MATERIALS,2006,91(1-3):85-91.
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