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@ARTICLE{Wolf:903171,
author = {Wolf, Moritz and Fischer, Nico and Claeys, Michael},
title = {{F}ormation of metal-support compounds in cobalt-based
{F}ischer-{T}ropsch synthesis: {A} review},
journal = {Chem Catalysis},
volume = {1},
number = {5},
issn = {2667-1093},
address = {Erscheinungsort nicht ermittelbar},
publisher = {Elsevier},
reportid = {FZJ-2021-04891},
pages = {1014 - 1041},
year = {2021},
abstract = {The Fischer-Tropsch synthesis as a large-scale industrial
process converts a mixture of carbon monoxide and hydrogen
in a surface polymerization reaction to mostly hydrocarbons
and water. In fact, water is the most abundant product on a
per mole basis. The major deactivation mechanisms for
cobalt-based catalysts in the Fischer-Tropsch synthesis
regarding the active metallic phase are various forms of
carbon deposition, sintering, and oxidation to
Fischer-Tropsch inactive oxidic phases. In particular high
concentrations of the product water may cause oxidation and
sintering of the active metallic cobalt phase, but are
inherent to high conversion levels in the Fischer-Tropsch
synthesis. Not only can cobalt be oxidized to CoO, it may
also form mixed metal oxides such as cobalt aluminates in
the presence of a metal oxide support. However, literature
only provides limited information on the formation and
morphology of such metal-support compounds due to the
challenging (direct) characterization of these phases in the
spent catalysts. Herein, thermodynamic predictions summarize
and discuss the feasibility of water-induced deactivation of
cobalt-based Fischer-Tropsch catalysts by oxidation.
Further, identified mechanisms for hydrothermal sintering
and recent findings on water-induced oxidation of metallic
cobalt to CoO are discussed. However, the main emphasis of
the review concerns the formation of metal-support compounds
and the applicability of various in situ and ex situ
characterization techniques on their identification. In
particular X-ray absorption spectroscopy has recently
provided significant insights into the formation of
metal-support compounds in (simulated) high conversion
Fischer-Tropsch environment, while high resolution
microscopy was successfully applied to elucidate
corresponding catalyst morphologies.},
cin = {IEK-11},
cid = {I:(DE-Juel1)IEK-11-20140314},
pnm = {1232 - Power-based Fuels and Chemicals (POF4-123)},
pid = {G:(DE-HGF)POF4-1232},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000901295900011},
doi = {10.1016/j.checat.2021.08.002},
url = {https://juser.fz-juelich.de/record/903171},
}