The fractal and percolation analysis of a polymeric Al2O3 gel

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题名:	The fractal and percolation analysis of a polymeric Al2O3 gel
作者:	Tsay,CS;Lee,CK;Chiang,AST
贡献者:	化學工程與材料工程學系
关键词:	POROUS SOLIDS;NONINTEGER DIMENSIONS;SURFACES;ADSORPTION;CHEMISTRY
日期:	1997
上传时间:	2010-06-29 17:31:32 (UTC+8)
出版者:	中央大學
摘要:	Fractal and percolation analysis have been performed on nitrogen adsorption isotherms of polymeric Al2O3 xerogel, prepared from a low-water non-aqueous solution of aluminum alkoxide. These xerogels showed a distinctively low pore connectivity compared to that reported in the literature on more conventional alumina gels. The alumina xerogel exhibited a surface fractal behavior in the scale range from nitrogen size to a few nanometers. The mean pore coordination number and the surface fractal dimension of the xerogel were rather stable upon calcination, until the appearance of the alpha-alumina crystalline phase, despite of a large decrease in BET surface area and pore volume. (C) 1997 Elsevier Science B.V.
關聯:	CHEMICAL PHYSICS LETTERS
显示于类别:	[化學工程與材料工程研究所] 期刊論文

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