Chemisorption and Dissociation of Carbon Monoxide on Rhodium Surfaces Full article
Journal |
Surface Science
ISSN: 0039-6028 |
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Output data | Year: 1981, Volume: 105, Number: 1, Pages: 299-312 Pages count : 14 DOI: 10.1016/0039-6028(81)90163-1 | ||||
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Abstract:
The adsorption, desorption and decomposition of CO on Rh surfaces have been investigated using field emission microscopy and thermal desorption spectroscopy. Thermal dissociation of CO cannot be detected on clean Rh surfaces at pressures up to 10−1 Torr and temperatures below 1000 K. This holds also for atomically rough surfaces like (210). CO dissociation can be promoted under the influence of an electron beam directed to the surface, a high electric field in the presence of CO in the gas phase and by means of discharge techniques. The growth of crystallites formed by CO dissociation and the diffusion of carbon into the bulk has been followed as a function of temperature and surface structure. The tip regions around (110) are very active in these processes. Carbon crystallites on these surfaces disappear around 1000 K by diffusion into the lattice whereas crystallites present around (311) surfaces persist up to 1150 K. The results are discussed in relation to the activity of Rh in CO/H2 reactions.
Cite:
Gorodetskii V.V.
, Nieuwenhuys B.E.
Chemisorption and Dissociation of Carbon Monoxide on Rhodium Surfaces
Surface Science. 1981. V.105. N1. P.299-312. DOI: 10.1016/0039-6028(81)90163-1 WOS Scopus РИНЦ
Chemisorption and Dissociation of Carbon Monoxide on Rhodium Surfaces
Surface Science. 1981. V.105. N1. P.299-312. DOI: 10.1016/0039-6028(81)90163-1 WOS Scopus РИНЦ
Dates:
Submitted: | Aug 29, 1980 |
Accepted: | Nov 7, 1980 |
Published print: | Apr 1, 1981 |
Published online: | Sep 18, 2002 |
Identifiers:
Web of science | WOS:A1981LN54700024 |
Scopus | 2-s2.0-0000403312 |
Elibrary | 31115663 |
Chemical Abstracts | 1981:430795 |
Chemical Abstracts (print) | 95:30795 |
OpenAlex | W2090576038 |