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Hysteresis and oscillations in the selectivity during the NO-H2 reaction over Rh(533) |
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| Authors: | N M H Janssen P D Cobden B E Nieuwenhuys M Ikai K Mukai K Tanaka |
| Affiliation: | (1) The Leiden Institute of Chemistry, Gorlaeus Laboratories, Leiden University, PO Box 9502, 2300 RA Leiden, The Netherlands;(2) The Institute for Solid State Physics, The University of Tokyo, 7-22-1 Roppongi, Minato-ku, 106 Tokyo, Japan |
| Abstract: | The NO-H2 reaction over Rh(533) shows oscillatory behaviour at H2-rich mixtures in the 10–6 mbar pressure regime around 470 K. The selectivity changes periodically in time: the rate of N2 formation is out of phase with the NH3 and H2O formation rates. Accumulation of atomic N plays a central role in the oscillating behaviour. A comparison will be made with the NO-H2 reaction over Pt(100). |
| Keywords: | NO-H2 reaction Rh(533) oscillations in selectivity |
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