Multiple and antagonistic effects of water on intrinsic physical properties of model Fischer-Tropsch cobalt catalysts evidenced with in situ X-ray diffraction.

Julien Scalbert (1) , Christèle Legens (1) , I. Clemencon (1) , Anne-Lise Taleb (1) , Loïc Sorbier (1) , Fabrice Diehl (1)

1 IFPEN - IFP Energies nouvelles

Direct evidence for cobalt oxidation under water treatment at 230 °C was revealed with in situ XRD. Oxidation kinetics was proved to be particle size dependent. Resulting Co3O4 showed a firmly smaller coherent domain size than the initial calcined catalyst. Several physical phenomena were proposed to occur during cobalt oxidation by water.

Domains: Chemical Sciences; Catalysis

Julien Scalbert, Christèle Legens, I. Clemencon, Anne-Lise Taleb, Loïc Sorbier, et al.. Multiple and antagonistic effects of water on intrinsic physical properties of model Fischer-Tropsch cobalt catalysts evidenced with in situ X-ray diffraction.. Chemical Communications, 2014, 50 (58), pp.7866-7869. ⟨10.1039/c4cc00947a⟩. ⟨hal-01053703⟩