Reactivity of CO on carbon-covered cobalt surfaces in Fischer-Tropsch synthesis

L. Joos, I.A.W. Filot, S. Cottenier, E.J.M. Hensen, M. Waroquier, V. Speybroeck, van, R.A. Santen, van

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Fischer–Tropsch synthesis is an attractive process to convert alternative carbon sources, such as biomass, natural gas, or coal, to fuels and chemicals. Deactivation of the catalyst is obviously undesirable, and for a commercial plant it is of high importance to keep the catalyst active as long as possible during operating conditions. In this study, the reactivity of CO on carbon-covered cobalt surfaces has been investigated by means of density functional theory (DFT). An attempt is made to provide insight into the role of carbon deposition on the deactivation of two cobalt surfaces: the closed-packed Co(0001) surface and the corrugated Co(112¯1) surface. We also analyzed the adsorption and diffusion of carbon atoms on both surfaces and compared the mobility. Finally, the results for Co(0001) and Co(112¯1) are compared, and the influence of the surface topology is assessed.
Originele taal-2Engels
Pagina's (van-tot)5317-5327
Aantal pagina's11
TijdschriftJournal of Physical Chemistry C
Nummer van het tijdschrift10
StatusGepubliceerd - 2014

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