Origin of the Spatiotemporal Oscillations Observed During the NO + H2 Reaction on a Rh Field Emitter Full article
| Journal |
Surface Science
ISSN: 0039-6028 |
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| Output data | Year: 1994, Volume: 320, Number: 3, Pages: 281-294 Pages count : 14 DOI: 10.1016/0039-6028(94)90316-6 | ||||||
| Tags | METAL-SURFACES; NITRIC-OXIDE; REDUCTION; NO; BEHAVIOR; RHODIUM; DECOMPOSITION; HYDROGEN; Rh(100); OXYGEN | ||||||
| Authors |
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| Affiliations |
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Funding (2)
| 1 | Netherlands Organisation for Scientific Research | |
| 2 | Netherlands Organisation for Scientific Research |
Abstract:
The main purpose of the study described in the present paper was to obtain more detailed information on the mechanism of the spatiotemporal oscillations found recently by field emission microscopy for the NO + H2 reaction on a Rh tip. These oscillations are related to the kinetics of the reaction over a Rh wire. There are two kinetic regions of the steady-state reaction. The oscillations are attributed to the reversible transition between these kinetic regions. The observed sharp moving wave can be ascribed to the hydrogenation of a nitrogen layer, followed by fast combination and/or decomposition of the adsorbed intermediate NH and restoring of its surface coverage by the NO + H2 interaction. Surface defects and, probably, grain boundaries are responsible for the initiation of the chemical waves in the course of the sustained oscillations.
Cite:
Cholach A.R.
, van Tol M.F.H.
, Nieuwenhuys B.E.
Origin of the Spatiotemporal Oscillations Observed During the NO + H2 Reaction on a Rh Field Emitter
Surface Science. 1994. V.320. N3. P.281-294. DOI: 10.1016/0039-6028(94)90316-6 WOS Scopus РИНЦ ANCAN OpenAlex
Origin of the Spatiotemporal Oscillations Observed During the NO + H2 Reaction on a Rh Field Emitter
Surface Science. 1994. V.320. N3. P.281-294. DOI: 10.1016/0039-6028(94)90316-6 WOS Scopus РИНЦ ANCAN OpenAlex
Dates:
| Submitted: | Feb 21, 1994 |
| Accepted: | Aug 14, 1994 |
| Published print: | Dec 1, 1994 |
| Published online: | Sep 10, 2002 |
Identifiers:
| Web of science: | WOS:A1994PV67100017 |
| Scopus: | 2-s2.0-0028740801 |
| Elibrary: | 22694414 |
| Chemical Abstracts: | 1995:253782 |
| Chemical Abstracts (print): | 122:116108 |
| OpenAlex: | W2031201447 |