Experimental arrangements suitable for the acquisition of inelastic neutron scattering spectra of heterogeneous catalysts

Silverwood, I. P. et al. (2011) Experimental arrangements suitable for the acquisition of inelastic neutron scattering spectra of heterogeneous catalysts. Review of Scientific Instruments, 82(3), 034101. (doi:10.1063/1.3553295)

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Publisher's URL: http://dx.doi.org/10.1063/1.3553295

Abstract

Inelastic neutron scattering (INS) is increasingly being used for the characterization of heterogeneous catalysts. As the technique is uniquely sensitive to hydrogen atoms, vibrational spectra can be obtained that emphasize a hydrogenous component or hydrogen-containing moieties adsorbed on to an inorganic support. However, due to sensitivity constraints, the technique typically requires large sample masses (∼10 g catalyst). A reaction system is hereby described that enables suitable quantities of heterogeneous catalysts to be appropriately activated and operated under steady-state conditions for extended periods of time prior to acquisition of the INS spectrum. In addition to <i>ex situ</i> studies, a cell is described which negates the need for a sample transfer stage between reaction testing and INS measurement. This cell can operate up to temperatures of 823 K and pressures up to 20 bar. The apparatus is also amenable to adsorption experiments at the gas–solid in

Item Type:Articles
Keywords:Adsorption, catalysts, hydrogen, neutron diffraction, neutron spectra
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Lennon, Professor David and Silverwood, Dr Ian
Authors: Silverwood, I. P., Hamilton, N.G., McFarlane, A., Ormerod, R.M., Guidi, T., Bones, J., Dudman, M.P., Goodway, C.M., Kibble, M., Parker, S.F., and Lennon, D.
Subjects:Q Science > QD Chemistry
College/School:College of Science and Engineering > School of Chemistry
Journal Name:Review of Scientific Instruments
Publisher:American Institute of Physics
ISSN:0034-6748
ISSN (Online):1089-7623
Published Online:02 March 2011

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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