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题名: Synthesis of mesoporous aluminosilicates with low Si/Al ratios using a single-source molecular precursor under acidic conditions
作者: Li, Ying;  Yang, Qihua;  Yang, Jie;  Li, Can
关键词: mesoporous aluminosilicates ;  bis(sec-butoxy)aluminoxy-triethoxysilane ;  Si/A1 ratio ;  acidity
刊名: JOURNAL OF POROUS MATERIALS
发表日期: 2006-10-01
DOI: 10.1007/s10934-006-8003-8
卷: 13, 期:3-4, 页:187-193
收录类别: ISTP ;  SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Applied ;  Chemistry, Physical ;  Materials Science, Multidisciplinary
研究领域[WOS]: Chemistry ;  Materials Science
英文摘要: A single molecular precursor, bis(sec-butoxy)aluminoxy-triethoxysilane, was used as aluminum source for the synthesis of mesoporous aluminosilicates with Si/Al ratios ranging from 1 to 10 under acidic conditions. Aluminum can be stoichiometrically incorporated into the mesoporous materials at pH = 1.5. The mesoporous aluminosilicates synthesized with the single molecular precursor display larger unit cell parameter and pore diameter than that of the materials prepared with aluminum sulfate, aluminum nitrate, aluminum hydroxide, and aluminum isopropoxide as the aluminum sources. IR spectra of adsorbed pyridine and NH3-TPD showed that both Bronsted acidic sites and Lewis acid sites with medium strength are present in the materials. However, no direct relationship between the acidic properties and the content of aluminum was observed when the Si/Al ratios of the mesoporous aluminosilicates are lower than 10.
关键词[WOS]: SILICA MATERIALS ;  TRIS(TERT-BUTOXY)SILOXY COMPLEXES ;  SIEVES ;  ALUMINUM ;  TRANSFORMATION ;  SURFACTANT ;  STABILITY ;  COPOLYMER ;  CATALYSTS ;  TRIBLOCK
语种: 英语
WOS记录号: WOS:000239207300002
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/140362
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, Ying,Yang, Qihua,Yang, Jie,et al. Synthesis of mesoporous aluminosilicates with low Si/Al ratios using a single-source molecular precursor under acidic conditions[J]. JOURNAL OF POROUS MATERIALS,2006,13(3-4):187-193.
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