Wu, C, Dupont, V orcid.org/0000-0002-3750-0266, Nahil, MA et al. (3 more authors) (2017) Investigation of Ni/SiO2 catalysts prepared at different conditions for hydrogen production from ethanol steam reforming. Journal of the Energy Institute, 90 (2). pp. 276-284. ISSN 1743-9671
Abstract
Ni/SiO2 catalysts prepared by a sol–gel method have been investigated for hydrogen production via steam reforming of ethanol using a continuous flow, fixed bed reactor system. Chemical equilibrium calculations were also performed to determine the effects of temperature and molar steam to carbon ratio on hydrogen production. The acidity of the preparation solution (modified by nitric acid and ammonia) and calcination atmosphere (air and N2) were investigated in the preparation of the catalysts. BET surface area and porosity, temperature-programmed oxidation (TPO), X-ray diffraction (XRD), transmission electron microscopy (TEM) and scanning electron microscopy (SEM) were used to characterise the prepared catalysts. The BET surface area was reduced when the solution acidity was lowered during the sol–gel preparation process. A pH value less than 2.0 was necessary to achieve high metal dispersion in the catalyst. Smaller NiO particles were obtained when the catalyst was calcined in N2. Material balances on ethanol steam reforming at 600 °C using the prepared Ni/SiO2 catalysts were determined, and higher hydrogen production with lower coke deposition on the reacted catalysts were also obtained from the catalysts calcined in N2 atmosphere.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2016 Energy Institute. Published by Elsevier Ltd. All rights reserved. This is an author produced version of a paper published in Journal of the Energy Institute. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Catalyst; Nickel; Hydrogen; Ethanol; Reforming |
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) |
Depositing User: | Symplectic Publications |
Date Deposited: | 02 May 2017 11:38 |
Last Modified: | 15 Jan 2018 21:31 |
Published Version: | https://doi.org/10.1016/j.joei.2016.01.002 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.joei.2016.01.002 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:115759 |