Impact of Process Conditions on the Sintering Behavior of an Alumina-Supported Cobalt Fischer–Tropsch Catalyst Studied with an in Situ Magnetometer
| Autor: | J. Labuschagne, Mark E. Dry, Michael Claeys, S. Booyens, P.J. van Berge, P. van Helden, E. van Steen, A.M. Saib, D.J. Moodley, Renier Crous |
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| Rok vydání: | 2015 |
| Předmět: |
inorganic chemicals
Materials science Inorganic chemistry technology industry and agriculture Nanoparticle chemistry.chemical_element Sintering Fischer–Tropsch process General Chemistry Partial pressure equipment and supplies Catalysis chemistry.chemical_compound chemistry Crystallite Cobalt Carbon monoxide |
| Zdroj: | ACS Catalysis. 5:841-852 |
| ISSN: | 2155-5435 |
| DOI: | 10.1021/cs501810y |
| Popis: | Sintering of supported cobalt nanoparticles is one of the main deactivation mechanisms in the Fischer–Tropsch synthesis. In this study, crystallite growth was studied with an alumina-supported catalyst in real time and as a function of process conditions using a novel in situ magnetometer. It could be shown that sintering with this catalyst occurred via a combination of high CO and high water partial pressures. It is proposed that particle growth proceeds via cobalt subcarbonyl migration over the hydroxylated support surface. |
| Databáze: | OpenAIRE |
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