An investigation on the role of ytterbium in ytterbium promoted y-alumina-supported nickel catalysts for dry reforming of methane

Amin, M, Tardio, J and Bhargava, S 2013, 'An investigation on the role of ytterbium in ytterbium promoted y-alumina-supported nickel catalysts for dry reforming of methane', International Journal of Hydrogen Energy, vol. 38, no. 33, pp. 14223-14231.


Document type: Journal Article
Collection: Journal Articles

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Title An investigation on the role of ytterbium in ytterbium promoted y-alumina-supported nickel catalysts for dry reforming of methane
Author(s) Amin, M
Tardio, J
Bhargava, S
Year 2013
Journal name International Journal of Hydrogen Energy
Volume number 38
Issue number 33
Start page 14223
End page 14231
Total pages 9
Publisher Elsevier
Abstract Addition of low quantities of ytterbium to sol-gel prepared Ni/yAl2O3 catalysts has been shown to lead to significant increases in catalytic activity and long term stability in the catalytic conversion of CO2 and CH4 into syngas (H2 and CO). The role of ytterbium in these catalysts was investigated in this study through detailed investigations on the structure and composition of ytterbium promoted Ni/y-Al2O3 catalysts using the following techniques: synchrotron X-ray diffraction, X-ray Photoemission Spectroscopy, Transmission Electron Microscopy, Scanning Electron Microscopy/Energy Dispersive X-ray analysis, Temperature Programmed Reduction techniques and N2 adsorption-desorption isotherms. The results obtained indicated that ytterbium, at small quantities (up to 2 wt%), interacted strongly with the support which in turn altered the interaction between nickel and the support (most notably it was found to completely inhibit the formation of NiAl2O4). This decreased interaction between Ni and the support also led to a higher quantity of Ni being present in the catalyst in the form of Ni.
Subject Nanomaterials
Catalysis and Mechanisms of Reactions
Chemical Characterisation of Materials
Chemical Sciences not elsewhere classified
Keyword(s) CO2 reforming of methane
Ni/gamma-Al 2O3 catalyst
Promoter
Ytterbium
DOI - identifier 10.1016/j.ijhydene.2013.08.040
Copyright notice This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial-No Derivative Works License, which permits non-commercial use, distribution, and reproduction in any medium, provided the original author and source are credited. Copyright © 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
ISSN 0360-3199
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Citation counts: TR Web of Science Citation Count  Cited 5 times in Thomson Reuters Web of Science Article | Citations
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