Pore connectivity of alumina and aluminium borate from nitrogen isotherms

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题名:	Pore connectivity of alumina and aluminium borate from nitrogen isotherms
作者:	Lee,CK;Tsay,CS
贡献者:	化學工程與材料工程學系
关键词:	POROUS SOLIDS;SORPTION MEASUREMENTS;ADSORPTION;HYSTERESIS;GEL
日期:	1998
上传时间:	2010-06-29 17:30:00 (UTC+8)
出版者:	中央大學
摘要:	The effects of calcination temperature on the connectivity of pore networks of alumina and aluminium borate samples, prepared by coprecipitation methods and low-water sol-gel processes, have been investigated based on the percolation analysis of their nitrogen adsorption isotherms. The mean coordination number (Z) was determined with the aid of the recently proposed Seaton theory. Values of Z obtained with this method cover the range 2-3, implying a low connection of pores in all the examined porous samples. Thermal effects may increase or decrease Z values depending on the samples. On the other hand, Z values of aluminium borate samples obtained from the coprecipitation method were slightly larger than those from the sol-gel process. It was also found that for sol-gel processed samples, Z values of alumina were slightly larger than that of aluminium borate.
關聯:	JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS
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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