Hydrogen adsorption studies on single wall carbon nanotubes

被引：132
|
作者：
Ansón, A
Callejas, MA
Benito, AM
Maser, WK
Izquierdo, MT
Rubio, B
Jagiello, J
Thommes, M
Parra, JB
Martínez, MT
机构：
[1] CSIC, Inst Carboquim, Zaragoza 50018, Spain
[2] Quantachrome Instruments, Boynton Beach, FL 33426 USA
[3] CSIC, Inst Nacl Carbon, Oviedo 33011, Spain
来源：
CARBON | 2004年 / 42卷 / 07期
关键词：
carbon nanotubes; soot; adsorption properties; density; porosity;
D O I：
10.1016/j.carbon.2004.01.038
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：
Hydrogen adsorption data on as-grown and heat-treated single walled carbon nanotubes (SWNTs) obtained by a volumetric procedure using a Quantachrome Autosorb-1 equipment are presented. The amounts of hydrogen adsorbed at atmospheric pressure reach approximately 0.01 wt.% at 298 K and I wt.% at 77 K. The isosteric heat of adsorption has been calculated for both samples from H-2 equilibrium adsorption data at three temperatures, having initial values of 7.42 and 7.75 kJ mol(-1). Studies in porous structure by N-2 adsorption and density measurements in helium pycnometer are reported. (C) 2004 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1243 / 1248
页数：6
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