Abstract
Redispersion of cobalt is a key process during Fischer–Tropsch catalyst regeneration. Using model catalysts we show that redispersion is a two step process. Oxidation of supported metallic cobalt nanoparticles produces hollow oxide particles by the Kirkendall effect; reduction leads to break-up of these hollow oxide shells, forming multiple metallic particles. This mechanism is to a large extent independent of the support.
Original language | English |
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Pages (from-to) | 811-816 |
Number of pages | 6 |
Journal | Topics in Catalysis |
Volume | 54 |
Issue number | 13-15 |
DOIs | |
Publication status | Published - 2011 |