Vertically-aligned carbon nanotube membranes for hydrogen separation
Article
Article Title | Vertically-aligned carbon nanotube membranes for hydrogen separation |
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ERA Journal ID | 201472 |
Article Category | Article |
Authors | Ge, Lei (Author), Wang, Li (Author), Du, Aijun (Author), Hou, Meng (Author), Rudolph, Victor (Author) and Zhu, Zhonghua (Author) |
Journal Title | RSC Advances: an international journal to further the chemical sciences |
Journal Citation | 2 (12), pp. 5329-5336 |
Number of Pages | 8 |
Year | 2012 |
Publisher | The Royal Society of Chemistry |
Place of Publication | United Kingdom |
ISSN | 2046-2069 |
Digital Object Identifier (DOI) | https://doi.org/10.1039/c2ra00031h |
Web Address (URL) | http://pubs.rsc.org/en/Content/ArticleLanding/2012/RA/c2ra00031h#!divAbstract |
Abstract | Vertically-aligned carbon nanotube membranes have been fabricated and characterized and the corresponding gas permeability and hydrogen separation were measured. The carbon nanotube diameter and areal density were adjusted by varying the catalyst vapour concentration (Fe/C ratio) in the mixed precursor. The permeances are one to two magnitudes higher than the Knudsen prediction, while the gas selectivities are still in the Knudsen range. The diameter and areal density effects were studied and compared, the temperature dependence of permeation is also discussed. The results confirm the existence of non-Knudsen transport and that surface adsorption diffusion may affect the total permeance at relative low temperature. The permeance of aligned carbon nanotube membranes can be improved by increasing areal density and operating at an optimum temperature. |
ANZSRC Field of Research 2020 | 400403. Chemical engineering design |
Public Notes | File reproduced in accordance with the copyright policy of the publisher/author. |
Byline Affiliations | University of Queensland |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q3z50/vertically-aligned-carbon-nanotube-membranes-for-hydrogen-separation
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