Hydrogen storage properties of N-doped microporous carbon
Hydrogen storage properties of N-doped microporous carbon
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DOI：
10.1021/jp908156v
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发表时间：
2009-11
影响因子：
3.7
通讯作者：
Lifeng Wang;R. T. Yang
中科院分区：
文献类型：
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作者：
Lifeng Wang;R. T. Yang
以NaY为硬模板剂，乙腈为碳氮前驱体，合成了氮掺杂微孔炭。储氢性能测试表明，在相同比表面积下，掺氮微孔碳的储氢容量比纯碳高18%。此外，对N掺杂微孔碳负载铂的样品进行了溢流储氢研究，在298K和10 Mpa下获得了1.26wt%的储氢容量，溢流增强倍数为2.4。此外，掺铂氮微孔碳的存储容量是铂/微孔碳的1.46倍。掺氮微孔碳样品的吸氢热和溢流吸附热均显著高于未掺氮炭样品。实验结果与文献中的理论计算相吻合。
A N-doped microporous carbon was synthesized by using NaY as a hard template and acetonitrile as the carbon and nitrogen precursor. The hydrogen storage measurements indicated that the N-doped microporous carbon had an 18% higher storage capacity than the pure carbon with a similar surface area. Furthermore, hydrogen storage via spillover was studied on a sample comprising Pt supported on N-doped microporous carbon, and a storage capacity of 1.26 wt % at 298 K and 10 MPa was obtained, showing an enhancement factor of 2.4 by spillover. In addition, the Pt/N-doped microporous carbon exhibited 1.46 times the storage capacity of Pt/microporous carbon. Significantly higher heats of adsorption were obtained on the N-doped microporous carbon samples than that on undoped carbons for both H2 adsorption and adsorption by spillover. The experimental results were consistent with the theoretical calculations from the literature.