[article]
| Titre : |
Influences of water and syngas partial pressure on the kinetics of a commercial alumina-supported cobalt Fischer-Tropsch catalyst |
| Type de document : |
texte imprimé |
| Auteurs : |
F. Gideon Botes, Auteur |
| Année de publication : |
2009 |
| Article en page(s) : |
pp. 1859–1865 |
| Note générale : |
Chemical engineering |
| Langues : |
Anglais (eng) |
| Mots-clés : |
Alumina-supported cobalt Fischer-Tropsch catalyst Water partial pressure Syngas |
| Résumé : |
The influences of the water partial pressure and the syngas pressure on the reaction kinetics of a commercial alumina-supported cobalt Fischer−Tropsch (FT) catalyst were investigated. Both a fresh catalyst, as well as an aged catalyst from a demonstration reactor, were employed in the study. It was concluded that water has a negligible influence on the overall FT reaction rate but lowers the methane selectivity and increases the CO2 selectivity. Longer term exposure to higher water partial pressures did not lead to step changes in the catalyst activity but may have increased the rate of gradual irreversible catalyst deactivation. Increasing the syngas pressure at constant H2/CO ratio significantly increased the FT reaction rate and decreased the methane selectivity, suggesting a substantial incentive to explore higher pressure operation of commercial cobalt−FT processes. |
| En ligne : |
http://pubs.acs.org/doi/abs/10.1021/ie8013023 |
in Industrial & engineering chemistry research > Vol. 48 N°4 (Février 2009) . - pp. 1859–1865
[article] Influences of water and syngas partial pressure on the kinetics of a commercial alumina-supported cobalt Fischer-Tropsch catalyst [texte imprimé] / F. Gideon Botes, Auteur . - 2009 . - pp. 1859–1865. Chemical engineering Langues : Anglais ( eng) in Industrial & engineering chemistry research > Vol. 48 N°4 (Février 2009) . - pp. 1859–1865
| Mots-clés : |
Alumina-supported cobalt Fischer-Tropsch catalyst Water partial pressure Syngas |
| Résumé : |
The influences of the water partial pressure and the syngas pressure on the reaction kinetics of a commercial alumina-supported cobalt Fischer−Tropsch (FT) catalyst were investigated. Both a fresh catalyst, as well as an aged catalyst from a demonstration reactor, were employed in the study. It was concluded that water has a negligible influence on the overall FT reaction rate but lowers the methane selectivity and increases the CO2 selectivity. Longer term exposure to higher water partial pressures did not lead to step changes in the catalyst activity but may have increased the rate of gradual irreversible catalyst deactivation. Increasing the syngas pressure at constant H2/CO ratio significantly increased the FT reaction rate and decreased the methane selectivity, suggesting a substantial incentive to explore higher pressure operation of commercial cobalt−FT processes. |
| En ligne : |
http://pubs.acs.org/doi/abs/10.1021/ie8013023 |
|
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