期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 38, 期 25, 页码 10453-10460出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2013.06.048
关键词
Hydrogen storage; Activated carbon; Nitrogen doping
资金
- CPER Structuration du Pole de Competitivite Fibres Grand'Est (Competitiveness Fibre Cluster), through local (Conseil General des Vosges)
- CPER Structuration du Pole de Competitivite Fibres Grand'Est (Competitiveness Fibre Cluster), through regional (Region Lorraine)
- CPER Structuration du Pole de Competitivite Fibres Grand'Est (Competitiveness Fibre Cluster), through national (DRRT)
- CPER Structuration du Pole de Competitivite Fibres Grand'Est (Competitiveness Fibre Cluster), through national (FNADT)
- European (FEDER) funds
Three activated carbons (ACs) having apparent surface areas higher than 2500 m(2)/g were doped with nitrogen by treatment with urea at 623 K under air flow. Nitrogen contents as high as 15.1 wt.% were obtained, but resulting in decreased surface areas and pore volumes. Hydrogen storage capacities of ACs before and after nitrogen doping were measured at 77 K and up to 8 MPa. After doping, the hydrogen uptake was lower due to the corresponding decrease of surface area. Statistical, ANOVA, analysis of the relevancy of surface area and nitrogen content on hydrogen storage at 77 K was carried out, taking into account our data and those data available in the open literature. We concluded that surface area controls hydrogen adsorption and nitrogen content is not a relevant parameter. Copyright (C) 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
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