Equilibration-time and pore-width dependent hysteresis of water adsorption isotherm on hydrophobic microporous carbons

被引：54
作者：
Nakamura, M. [1 ]
Ohba, T. [1 ]
Branton, P. [2 ]
Kanoh, H. [1 ]
Kaneko, K. [1 ]
机构：
[1] Chiba Univ, Grad Sch Sci, Inage Ku, Chiba 2638522, Japan
[2] Grp R&D British Amer Tobacco, Southampton SO15 8TL, Hants, England
来源：
CARBON | 2010年 / 48卷 / 01期
关键词：
GRAPHITIC NANOPORES; CLUSTER GROWTH; NANOSPACES; SIMULATION; MOLECULES; SORPTION; SURFACE; VAPOR;
D O I：
10.1016/j.carbon.2009.09.008
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Effect of pore width (w) and equilibration time on hysteresis of water adsorption isotherm was studied at 303-323 K using hydrophobic activated carbon fiber (ACF). The adsorption isotherm of ACF of w = 1.1 nm has a wide hysteresis loop; the longer the equilibration time from 5 min to 16 h, the narrower the loop width due to a lower pressure shift of the adsorption branch. This fact indicates that adsorption branch stems from a metastable adsorption. (C) 2009 Elsevier Ltd. All rights reserved.
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页码：305 / 308
页数：4
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