Facile synthesis of ordered mesoporous γ-alumina monoliths via polymerization-based gel-casting

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	Facile synthesis of ordered mesoporous γ-alumina monoliths via polymerization-based gel-casting
	Hu LT(胡丽天); Yan XB(阎兴斌); Xu S(许珊); Yan XB(阎兴斌); Xue QJ(薛群基)
刊名	Microporous Mesoporous Mater.
	2011
卷号	138 页码:40-44
关键词	c-Alumina Monolith Mesoporous Gel-casting
ISSN号	1387-1811
通讯作者	阎兴斌
中文摘要	Porous c-alumina monoliths with hexagonal mesoporous structures were prepared starting from wellordered mesoporous alumina powders which were firstly synthesized by the self-assembly of aluminum isopropoxide and a triblock copolymer in the presence of nitric acid. The alumina powders were fused together to form alumina monoliths by the integration of polymer gel-casting together with the calcination at different temperatures in air. The powdery and monolithic products were investigated using transmission electron microscopy (TEM), field emission scanning electron microscopy (FE-SEM), smallangle X-ray scattering (SAXS), powder wide-angle X-ray diffraction (WA-XRD) and the nitrogen adsorption– desorption isotherm measurements. As results, the as-prepared powdery alumina possesses ordered p6mm hexagonal mesoporosity, high BET surface area and narrow pore-size distribution. After high-temperature calcination, the obtained alumina monoliths still exhibit ordered mesoporosity with hexagonal symmetry, which is very similar to that of the original powdery sample except for the reduced pore volume and specific surface area. The method can be extended to prepare other porous metal oxide monoliths when appropriate powdery metal oxides with a connected pore system are applied.
学科主题	物理化学
收录类别	SCI
资助信息	the Top Hundred Talents Program of Chinese Academy of Sciences;the National BasicResearch 973 Program of China;The National Nature Science Foundation of China (51005225)
语种	英语
公开日期	2012-09-20
内容类型	期刊论文
源URL	[http://210.77.64.217/handle/362003/391]
专题	兰州化学物理研究所_OSSO国家重点实验室兰州化学物理研究所_固体润滑国家重点实验室兰州化学物理研究所_先进润滑与防护材料研究发展中心
通讯作者	Yan XB(阎兴斌); Yan XB(阎兴斌)
推荐引用方式 GB/T 7714	Hu LT,Yan XB,Xu S,et al. Facile synthesis of ordered mesoporous γ-alumina monoliths via polymerization-based gel-casting[J]. Microporous Mesoporous Mater.,2011,138:40-44.
APA	胡丽天,阎兴斌,许珊,阎兴斌,&薛群基.(2011).Facile synthesis of ordered mesoporous γ-alumina monoliths via polymerization-based gel-casting.Microporous Mesoporous Mater.,138,40-44.
MLA	胡丽天,et al."Facile synthesis of ordered mesoporous γ-alumina monoliths via polymerization-based gel-casting".Microporous Mesoporous Mater. 138(2011):40-44.