In‐situ X‐Ray Absorption Near Edge Structure Spectroscopy of a Solid Catalyst using a Laboratory‐Based Set‐up

An in‐situ laboratory‐based X‐ray Absorption Near Edge Structure (XANES) Spectroscopy set‐up is presented, which allows performing long‐term experiments on a solid catalyst at relevant reaction conditions of temperature and pressure. Complementary to research performed at synchrotron radiation facil...

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Bibliographic Details
Published in:ChemCatChem 2019-02, Vol.11 (3), p.1039-1044
Main Authors: Moya‐Cancino, José G., Honkanen, Ari‐Pekka, van der Eerden, Ad M. J., Schaink, Herrick, Folkertsma, Lieven, Ghiasi, Mahnaz, Longo, Alessandro, de Groot, Frank M. F., Meirer, Florian, Huotari, Simo, Weckhuysen, Bert M.
Format: Article
Language:English
Subjects:
Absorption
Catalysis
Catalysts
Chemical synthesis
Cobalt
Fischer-Tropsch Synthesis
heterogeneous catalysis
hydrogenation reaction
Laboratories
Nanoparticles
Oxidation
Phosphates
Spectroscopy
Spectrum analysis
Synchrotron radiation
Titanium dioxide
X-ray spectroscopy
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Summary:An in‐situ laboratory‐based X‐ray Absorption Near Edge Structure (XANES) Spectroscopy set‐up is presented, which allows performing long‐term experiments on a solid catalyst at relevant reaction conditions of temperature and pressure. Complementary to research performed at synchrotron radiation facilities the approach is showcased for a Co/TiO2 Fischer‐Tropsch Synthesis (FTS) catalyst. Supported cobalt metal nanoparticles next to a (very small) fraction of cobalt(II) titanate, which is an inactive phase for FTS, were detected, with no signs of re‐oxidation of the supported cobalt metal nanoparticles during FTS at 523 K, 5 bar and 200 h, indicating that cobalt metal is maintained as the main active phase during FTS. A novel X‐ray Absorption Near Edge Structure Spectroscopy set‐up is introduced, which allows to perform long‐term studies of solid catalysts under realistic reaction conditions in a laboratory environment. Its potential has been illustrated for a Co/TiO2 Fischer‐Tropsch Synthesis catalyst, highlighting that re‐oxidation of the active metallic phase did not occur.
ISSN:1867-3880
1867-3899
DOI:10.1002/cctc.201801822