Multiple and antagonistic effects of water on intrinsic physical properties of model Fischer-Tropsch cobalt catalysts evidenced by in situ X-ray diffractionElectronic supplementary information (ESI) available: Particle size distributions determined by TEM before and after water treatment and quantification of crystalline phases using XRD. See DOI: 10.1039/c4cc00947a

Direct evidence for cobalt oxidation under water treatment at 230 °C was revealed using in situ XRD, even in the presence of small amounts of H 2 . Oxidation kinetics was proved to be particle size dependent. The resulting Co 3 O 4 showed a firmly smaller coherent domain size than the initial calcin...

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Main Authors: Scalbert, J, Legens, C, Clémençon, I, Taleb, A.-L, Sorbier, L, Diehl, F
Format: Article
Language:English
Online Access:Get full text
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Summary:Direct evidence for cobalt oxidation under water treatment at 230 °C was revealed using in situ XRD, even in the presence of small amounts of H 2 . Oxidation kinetics was proved to be particle size dependent. The resulting Co 3 O 4 showed a firmly smaller coherent domain size than the initial calcined catalyst. Oxidising cobalt with a rate depending on particle size, water leads to agglomerated particles with smaller crystalline coherent domain size.
ISSN:1359-7345
1364-548X
DOI:10.1039/c4cc00947a