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| Hauptseite > Publikationsdatenbank > Formation of metal-support compounds in cobalt-based Fischer-Tropsch synthesis: A review > print |
| Hauptseite > Publikationsdatenbank > Formation of metal-support compounds in cobalt-based Fischer-Tropsch synthesis: A review > print |
| 001 | 903171 | ||
| 005 | 20240709081946.0 | ||
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| 041 | _ | _ | |a English |
| 100 | 1 | _ | |a Wolf, Moritz |0 P:(DE-Juel1)185799 |b 0 |
| 245 | _ | _ | |a Formation of metal-support compounds in cobalt-based Fischer-Tropsch synthesis: A review |
| 260 | _ | _ | |a Erscheinungsort nicht ermittelbar |c 2021 |b Elsevier |
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| 520 | _ | _ | |a 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. |
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| 700 | 1 | _ | |a Fischer, Nico |0 0000-0002-8817-3621 |b 1 |
| 700 | 1 | _ | |a Claeys, Michael |0 0000-0002-5797-5023 |b 2 |e Corresponding author |
| 773 | _ | _ | |a 10.1016/j.checat.2021.08.002 |g Vol. 1, no. 5, p. 1014 - 1041 |0 PERI:(DE-600)3110091-0 |n 5 |p 1014 - 1041 |t Chem Catalysis |v 1 |y 2021 |x 2667-1093 |
| 856 | 4 | _ | |u https://juser.fz-juelich.de/record/903171/files/Formation%20of%20metal-support%20compounds%20in%20cobalt-based%20Fischer-Tropsch%20synthesis_%20A%20review.pdf |y Published on 2021-09-07. Available in OpenAccess from 2022-09-07. |z StatID:(DE-HGF)0510 |
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