The Pore Structure Determination of Carbon Aerogels

被引：0
|
作者：
Y. Hanzawa
K. Kaneko
N. Yoshizawa
R.W. Pekala
M.S. Dresselhaus
机构：
[1] Chiba University,Physical Chemistry, Material Science, Graduate School of Science and Technology
[2] National Institute for Resources and Environment,Carbon Materials Laboratory
[3] Lawrence Livermore National Laboratory,Department of Electrical Engineering and Computer Science and Department of Physics
[4] Massachusetts Institute of Technology,undefined
来源：
Adsorption | 1998年 / 4卷
关键词：
mesopore structure; Saam-Cole theory; adsorption hysteresis; carbon aerogel; nitrogen adsorption;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The detailed adsorption isotherms of nitrogen on carbon aerogels at 77 K were measured. The N2 adsorption isotherm had a marked hysteresis. The adsorption isotherms were analyzed by high resolution αs-plots to evaluate their porosity. The αs-plots showed an explicit upward deviation from the linearity below αs = 0.5, suggesting the presence of micropores. The mesoporosity and microporosity were separately determined from the αs-plot. The predominant pores in carbon aerogels were mesopores and the percentage of micropores was in the range of 5 to 10% of the total pore volume. The N2 adsorption hysteresis was analyzed with the Saam-Cole theory under the assumption of the cylindrical pore shape. The parameters determined from the Saam-Cole method were associated with the carbon aerogel structure.
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页码：187 / 195
页数：8
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