Preprint

PUBDB-2025-03876

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Operando Probing of the Fischer-Tropsch Reaction on Co Single Crystal Surfaces up to 1 bar

Nilsson, A. ; Loemker, P. (Corresponding author)Extern* ; Degerman, D.Extern* ; Goodwin, C.Extern* ; Shipilin, M.Extern* ; Amann, P.Extern* ; Rodrigues, G. ; Martinez, F. G. ; Rameshan, R.Extern* ; Gladh, J.Extern* ; Wang, H.-Y.Extern* ; Holm, A.Extern* ; Tober, S.Extern*DESY* ; Schober, J.-C.Extern*DESY* ; Jacobse, L.Extern* ; Soldemo, M.Extern* ; Vonk, V.XFEL.EU*DESY* ; Gleissner, R.Extern* ; Noei, H.DESY* ; Hegedüs, Z.DESY* ; Stierle, A.XFEL.EU*DESY* ; Schlueter, C. (Corresponding author)DESY*

2024

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Please use a persistent id in citations: doi:10.3204/PUBDB-2025-03876

Abstract: The surface chemistry of the Fischer-Tropsch catalytic reaction over Co has still several unknows. Here, we report an operando X-ray photoelectron spectroscopy study of Co(0001) and Co(1014), and operando high energy surface X-ray diffraction of Co(0001), during the Fischer-Tropsch reaction at 0.15 bar − 1 bar and 406 K − 548 K in a H$_2$/CO gas mixture. We find that the Co surfaces remain metallic under all conditions and that the coverage of chemisorbed species ranges from 0.4–1.7 monolayers depending on pressure and temperature. The adsorbates include CO on-top, C/-C$_x$H$_y$ and various longer hydrocarbon molecules, indicating a rate-limiting direct CO dissociation pathway and that only hydrocarbon species participate in the chain growth. The accumulation of hydrocarbon species points to the termination step being rate-limiting as well. Furthermore, we demonstrate that the intermediate surface species are highly dynamic, appearing and disappearing with time delays after rapid changes in the reactants’ composition.

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Contributing Institute(s):

1. DOOR-User (DOOR ; HAS-User)
2. FS DOOR-User (FS DOOR-User)
3. PETRA-D (FS-PETRA-D)
4. Nanolab (FS-NL)
5. The European XFEL Users (XFEL-User)
6. PETRA-S (FS-PETRA-S)

Research Program(s):

1. 632 - Materials – Quantum, Complex and Functional Materials (POF4-632) (POF4-632)
2. 6G3 - PETRA III (DESY) (POF4-6G3) (POF4-6G3)
3. SWEDEN-DESY - SWEDEN-DESY Collaboration (2020_Join2-SWEDEN-DESY) (2020_Join2-SWEDEN-DESY)
4. CALIPSOplus - Convenient Access to Light Sources Open to Innovation, Science and to the World (730872) (730872)

Experiment(s):

1. PETRA Beamline P21.1 (PETRA III)
2. PETRA Beamline P21.2 (PETRA III)
3. PETRA Beamline P22 (PETRA III)

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Database coverage:
; ; Published

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Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Journal Article Loemker, P. (Corresponding author)Extern* ; Degerman, D.Extern* ; Goodwin, C.Extern* ; Shipilin, M.Extern* ; Amann, P.Extern* ; Rodrigues, G. L. S.Extern* ; Garcia-Martinez, F.DESY* ; Rameshan, R.Extern* ; Gladh, J.Extern* ; Wang, H.-Y.Extern* ; Soldemo, M.Extern* ; Holm, A.Extern* ; Tober, S.DESY* ; Schober, J.-C.DESY* ; Jacobse, L.Extern* ; Vonk, V.DESY* ; Gleißner, R.DESY* ; Noei, H.DESY* ; Hegedues, Z.DESY* ; Stierle, A.DESY* ; Schlueter, C.DESY* ; Nilsson, A. (Corresponding author)Extern*
In-situ probing of the Fischer-Tropsch reaction on Co single crystal surfaces up to 1 bar
Nature Communications 16(1), 1005 (2025) [10.1038/s41467-025-56082-8]2025     Files  Fulltext BibTeX | EndNote: XML, Text | RIS

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