Cheng, F, Dupont, V orcid.org/0000-0002-3750-0266 and Twigg, MV (2017) Direct reduction of nickel catalyst with model bio-compounds. Applied Catalysis B: Environmental, 200. pp. 121-132. ISSN 0926-3373
Abstract
The effects of temperature and S/C on the reduction extent and kinetics of a steam reforming NiO/α-Al₂O₃ catalyst were systematically investigated using five bio-compounds commonly produced during the fermentation, pyrolysis and gasification processes of biomass (acetic acid, ethanol, acetone, furfural and glucose). Reduction was also performed with methane and hydrogen for comparison. Kinetic modelling was applied to the NiO conversion range of 0–50% using the Handcock and Sharp method. The two-dimensional nuclei growth model (A2) was found to fit very well except for glucose. For all the bio-compounds, the apparent activation energy of NiO reduction was between 30 and 40 kJ/mol. Their pre-exponential factors decreased in this order: CH₄ > ethanol ≈ acetone > acetic acid > furfural > glucose, probably due to the different activities of reducing species they produced. Optimal molar steam to carbon ratios for reduction kinetics were found between 1 and 2.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2016 The Authors. Published by Elsevier B.V. This is an open access article under the terms of the Creative Commons Attribution License (CC-BY). |
Keywords: | Nickel oxide; bio-compounds; catalyst reduction; kinetics; chemical looping |
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) |
Funding Information: | Funder Grant number EPSRC EP/G01244X/1 |
Depositing User: | Symplectic Publications |
Date Deposited: | 27 Jun 2016 11:09 |
Last Modified: | 23 Jun 2023 22:08 |
Published Version: | http://dx.doi.org/10.1016/j.apcatb.2016.06.044 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.apcatb.2016.06.044 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:101207 |