EEXPERIMENTAL STUDY AND COMPUTER SIMULATION OF HYDROGEN ADSORPTION ON CARBON NANOFIBRES

摘要：

The hydrogen adsorption by carbon nanofibres has been experimentally studied together with computer simulations. Adsorption isotherms on one kind of carbon nanofibres have been volumetrically measured over a temperature range of 273 K-353 K. The adsorption amount is small. And the adsorption and desorption isotherms are almost reversible, which reveals the characteristics of physisorption. Grand Canonical Ensemble Monte Carlo (GCMC) approach is also used to simulate hydrogen adsorption on carbon nanofibres with different pore width. Simulated results show that it is difficult to meet the DOE target (6.4 wt％, 62.0 m3/kg) when the pore width is 0.34nm. When the pore width is expanded to 0.9 nm, the hydrogen uptake reaches a maximum at a moderate pressure, and can meet the target under 1MPa at 77 K. The potential energy theory is also adopted to explain the simulation results.

关键词： experimental study computer simulation hydrogen adsorption carbon nanofibres

作者: Chao ZHANG Guanghui ZHOU Xiaowei FAN

作者单位: Zhongyuan University of Technology, No.41 Zhongyuan Middle Road,Zhengzhou, 450007, P.R. China

会议类型: 国际会议

会议名称: The 22nd International Congress of Refrigeration(第22届国际制冷大会)

会议地点: 北京

会议语种:英文

在线出版日期: 2007-08-21（万方平台首次上网日期，不代表论文的发表时间）