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题名: Preparation of ordered mesoporous crystalline alumina replicated by mesoporous carbon
作者: Liu, Qian1;  Wang, Aiqin1;  Xu, Jinming1;  Zhang, Yanhua1;  Wang, Xiaodong1;  Zhang, Tao1
通讯作者: 张涛
关键词: Ordered ;  Crystallize ;  Mesoporous alumina ;  Template ;  Synthesis
刊名: MICROPOROUS AND MESOPOROUS MATERIALS
发表日期: 2008-12-01
DOI: 10.1016/j.micromeso.2008.05.011
卷: 116, 期:1-3, 页:461-468
收录类别: SCI
文章类型: Article
部门归属: 15
项目归属: 1501
产权排名: 1;1
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: Ordered mesoporous alumina with crystalline framework walls has been fabricated using a repeated nanocasting strategy. Mesoporous silica and mesoporous carbon were successively employed as the exotemplates. Constrained by the rigid carbon template structure, the alumina precursor in the channels of the carbon template could be well crystallized by elevating the temperature in an inert atmosphere, yielding gamma-Al(2)O(3) with ordered mesoporous structure upon the carbon template removal. The resulting alumina sample displays a faithfully negative replication both in the pore arrangement and particle morphology of the carbon template, thus a positive replication of the original silica template. The mean pore sizes of the alumina replicas can be tuned from 4.8 nm to 6.2 nm through choosing mesoporous silicas with different pore sizes as the templates. The ordered structure maintained stable until 750 degrees C, above which it was significantly destroyed due to the overgrowth of the alumina nanocrystallites and the phase transformation-associated constraint. Besides the hexagonally ordering, a 3D cubic ordered mesoporous alumina with gamma-alumina framework walls has also been prepared using cubic CMK-8 as the template. (C) 2008 Elsevier Inc. All rights reserved.
关键词[WOS]: MOLECULAR-SIEVES ;  TEMPLATE SYNTHESIS ;  METAL-OXIDES ;  SILICA ;  COPOLYMER ;  MESOSTRUCTURES ;  MECHANISM ;  TRIBLOCK ;  CMK-3 ;  ACID
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000261133600064
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/100827
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:
Liu, Qian,Wang, Aiqin,Xu, Jinming,et al. Preparation of ordered mesoporous crystalline alumina replicated by mesoporous carbon[J]. MICROPOROUS AND MESOPOROUS MATERIALS,2008,116(1-3):461-468.
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