Elbaba, IF and Williams, PT (2013) High yield hydrogen from the pyrolysis-catalytic gasification of waste tyres with a nickel/dolomite catalyst. Fuel: the science and technology of fuel and energy, 106. 528 - 536. ISSN 0016-2361
Abstract
Nickel/dolomite catalysts have been prepared and investigated for their suitability for the production of hydrogen from the two-stage pyrolysis-gasification of waste tyres. Experiments were conducted at a pyrolysis temperature of 500 °C and gasification temperature was kept constant at 800 °C with a catalyst/waste tyres ratio of 0.5. Fresh and reacted catalysts were characterised using a variety of methods, including, BET, X-ray diffraction (XRD), thermogravimetric analysis (TGA) and scanning electron microscopy (SEM)-energy dispersive X-ray spectrometry (EDXS). The results indicated that the gas yield was significantly increased from 30.3 to 49.1 wt.% and the potential H production was doubled with the introduction of 5%Ni into the calcined dolomite catalyst. The results show also a further increase in the gas yield and the potential H production with increasing Ni loading from 5 to 20 wt.%. The coke deposited on the catalyst surface was 3.1, 0.9, 2.8 and 3.7 wt.%, when the Ni loading was 0, 5, 10 and 20 wt.% for the calcined dolomite catalyst, respectively. The results showed that the calcined Ni dolomite catalysts became deactivated by filamentous carbons.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | (c) 2013 Elsevier Ltd. All rights reserved. NOTICE: this is the author’s version of a work that was accepted for publication in Fuel. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Fuel, [VOL 106(2013)] DOI 10.1016/j.fuel.2012.12.067 |
Keywords: | Hydrogen; Catalyst; Pyrolysis; Gasification; Tyre |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Chemical & Process Engineering (Leeds) > Energy Research Institute (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 12 Mar 2014 15:48 |
Last Modified: | 12 Mar 2014 15:48 |
Published Version: | http://dx.doi.org/10.1016/j.fuel.2012.12.067 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.fuel.2012.12.067 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:77992 |