Alharthi, A., Blackley, R. A., Flowers, T. H., Hargreaves, J. S.J. , Pulford, I. D., Wigzell, J. and Zhou, W. (2014) Iron ochre: a pre-catalyst for the cracking of methane. Journal of Chemical Technology and Biotechnology, 89(9), pp. 1317-1323. (doi: 10.1002/jctb.4434)
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93934.pdf - Published Version Available under License Creative Commons Attribution. 2MB |
Publisher's URL: http://dx.doi.org/10.1002/jctb.4434
Abstract
Background: Iron ochres are gelatinous sludges which can cause problems in terms of water management. In this manuscript, the application of iron ochre obtained from a river has been applied to catalytically crack methane – another potential waste product - into two useful products, hydrogen and a magnetic carbon containing composite.<p></p> Results: The powder XRD pattern of the iron ochre was found to be consistent with the expected 2-line ferrihydrite and EDX analysis showed Fe to be a major component although some Si was present. The sample was observed to contain a fraction with a tubular morphology consistent with the presence of extra-cellular biogenic iron oxide formed by leptothrix. Upon exposure to methane at elevated temperatures, the material was found to transform into an active catalyst for hydrogen production yielding a magnetic carbon containing composite material comprising filamentous carbon and encapsulating graphite.<p></p> Conclusion: The application of two waste products – iron ochre and methane – to generate two useful products – hydrogen and a magnetic carbon containing composite- has been demonstrated. Furthermore, the ochre has been shown to comprise tubular morphology extra-cellular biogenic iron oxide which may be of interest in terms of other applications.<p></p>
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Flowers, Dr Hugh and Hargreaves, Professor Justin |
| Authors: | Alharthi, A., Blackley, R. A., Flowers, T. H., Hargreaves, J. S.J., Pulford, I. D., Wigzell, J., and Zhou, W. |
| College/School: | College of Science and Engineering > School of Chemistry |
| Journal Name: | Journal of Chemical Technology and Biotechnology |
| Publisher: | Wiley |
| ISSN: | 0268-2575 |
| ISSN (Online): | 1097-4660 |
| Copyright Holders: | Copyright © 2014 The Authors |
| First Published: | First published in Journal of Chemical Technology and Biotechnology 89(9):1317-1323 |
| Publisher Policy: | Reproduced under a Creative Commons License |
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