Abstract
Inelastic neutron scattering is a spectroscopic technique which enables one to observe vibrational and rotational spectra of catalysts and sorbed species. The spectrum is due to energy transfer from the incident neutrons to the scatterer. Since hydrogen is the strongest scatterer the INS technique is especially useful for investigating motions involving hydrogen atoms. I shall review applications of neutron scattering in catalytic studies and describe our INS studies of molybdenum-containing catalysts using the time focused crystal analyzer spectrometer (TFXA) at the ISIS pulsed neutron source at the Rutherford Appleton Laboratory. Particular topics will include chemisorbed hydrogen, the nature and binding of water in alumina-supported molybdenum oxide catalysts, the search for metal-hydrogen and sulfur-hydrogen species in molybdenum disulfide catalysts, and the interaction of benzene and thiophene with the catalyst, species in zeolites, and surface reactions of hydrogen.
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