Hydrogen storage in multi-wall carbon nanotubes using samples up to 85 g
Hydrogen storage in multi-wall carbon nanotubes using samples up to 85 g
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DOI：
10.1007/s00339-003-2414-z
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发表时间：
2004-04
期刊：
影响因子：
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通讯作者：
Guoqing Ning;F. Wei;Guohua Luo;Qixiang Wang;Yuen Wu;Hao Yu
中科院分区：
文献类型：
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作者：
Guoqing Ning;F. Wei;Guohua Luo;Qixiang Wang;Yuen Wu;Hao Yu
在纳米团聚流化床反应器中合成了35-85 g多壁碳纳米管（MWNT）样品，在室温和0-12 MPa压力下研究了碳纳米管储氢性能。通过体积流量计测量由CNT释放的氢气的体积。质量高达85 g的CNT样品中的H2存储能力可以以0.01 wt. %的精度获得。平均直径为10-30 nm的MWNTs，使用硝酸或氢氧化钠溶液洗涤和高温处理进行预处理。研究了氢气压力、贮氢时间和处理方法等因素的影响。所有数据表明，由MWNTs在室温下释放的氢的量不超过0.30重量%，而由MWNTs在77 K下释放的氢可以达到2.27重量%。
Hydrogen storage in carbon nanotubes (CNTs) is investigated at ambient temperature and pressures of 0–12 MPa, using 35–85 g multi-wall carbon nanotube (MWNT) samples that were synthesized in a nano-agglomerate fluidized bed reactor. The volume of hydrogen gas released by the CNTs was measured by a volumetric flow meter. The capability of H2storage in the CNT samples of mass of up to 85 g can be obtained with a precision of 0.01 wt. %. MWNTs with average diameters ranging from 10–30 nm and were pretreated using nitric acid or a sodium hydroxide solution wash and a high temperature treatment. The influence of the hydrogen pressure, hydrogen storage time and treatment method were studied. All data show that the amount of hydrogen released by the MWNTs at room temperature is no more than 0.30 wt. %, while hydrogen released by MWNT at 77 K can reach 2.27 wt. %.