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Digitale Medien

Surface diffusion of CO on silica-supported Ru particles: 13C nuclear magnetic resonance studies (1990)

Duncan, T. M. ; Thayer, A. M. ; Root, T. W.

College Park, Md. : American Institute of Physics (AIP)

The Journal of Chemical Physics 92 (1990), S. 2663-2672

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Details

ISSN: 1089-7690

Quelle: AIP Digital Archive

Thema: Physik , Chemie und Pharmazie

Notizen: Portions of CO adsorbed on Ru particles, selected by the orientation of the C–O bond relative to an external magnetic field, are labeled by inversion of the 13C nuclear magnetic dipole. Changes in the orientation of the CO bond of these labeled molecules are then observed with 13C NMR spectroscopy. The temperature dependence and rate of reorientation are consistent with surface diffusion on Ru particles with small numbers of flat faces. The insensitivity to CO pressure in the range 0.5–100 Torr discounts stimulated desorption by gas-phase CO.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1063/1.457961

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