Quantification of surface species present on a nickel/alumina methane reforming catalyst

Silverwood, I.P., Hamilton, N. G., Laycock, C. J., Staniforth, J. Z., Ormerod, R. M., Frost, C. D., Parker, S. F. and Lennon, D. (2010) Quantification of surface species present on a nickel/alumina methane reforming catalyst. Physical Chemistry Chemical Physics, 12(13), pp. 3102-3107. (doi:10.1039/b919977b)

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Abstract

An alumina-supported nickel catalyst has been used to effect the 'dry' reforming of methane, using CO2 as the oxidant. After 6 hours on-stream, reaction was stopped and the sample analysed by inelastic neutron scattering (INS). The INS spectrum reveals the presence of hydrocarbonaceous species as well as hydroxyl species present at the catalyst surface. Through the use of appropriate reference compounds, calibration procedures have been developed to determine the concentration of the retained hydrocarbon and hydroxyl moieties. Ancillary temperature programmed oxidation experiments establish the total carbon content. This approach not only enables the extent of overall carbon laydown to be determined but it also identifies the degree to which hydrogen is associated with carbon and oxygen atoms. The methodology described is generic and should be applicable to a wide number of heterogeneously catalysed systems.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Lennon, Professor David and Silverwood, Dr Ian
Authors: Silverwood, I.P., Hamilton, N. G., Laycock, C. J., Staniforth, J. Z., Ormerod, R. M., Frost, C. D., Parker, S. F., and Lennon, D.
Subjects:Q Science > QD Chemistry
College/School:College of Science and Engineering > School of Chemistry
Journal Name:Physical Chemistry Chemical Physics
ISSN:1463-9076
ISSN (Online):1463-9084
Published Online:24 February 2010

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
442801Towards a molecular understanding of deactivation issues in methane reforming catalystsDavid LennonEngineering & Physical Sciences Research Council (EPSRC)EP/E028861/1CHEM - CHEMISTRY