Print Email Facebook Twitter Role of surface carboxylate deposition on the deactivation of cobalt on titania Fischer-Tropsch catalysts Title Role of surface carboxylate deposition on the deactivation of cobalt on titania Fischer-Tropsch catalysts Author Gonugunta, P. (TU Delft RST/Fundamental Aspects of Materials and Energy; TU Delft Engineering Thermodynamics) Dugulan, A.I. (TU Delft RID/TS/Instrumenten groep) Bezemer, G. Leendert (Shell Global Solutions International B.V.) Brück, E.H. (TU Delft RST/Fundamental Aspects of Materials and Energy) Date 2021 Abstract Operando spectroscopic techniques (Diffusive Reflective Infrared Fourier-Transform and Mössbauer emission spectroscopy) were combined to investigate the role of oxygenates deposition on deactivation of cobalt on titania Fischer-Tropsch catalysts at high pressure. Clear formation of carboxylates was seen for catalysts prepared via both impregnation and precipitation, but more and heavier carboxylates were seen on the impregnated catalyst. This effect is related to a higher olefin content in the products obtained with the impregnated sample, resulting to increased formation of oxygenates through the hydroformylation side reaction. The combined gas chromatography/infrared spectroscopy data demonstrated that the surface carboxylate species are not involved in the catalyst deactivation, being most likely spectator species on the titania support. Subject CarboxylatesCobaltDeactivationFischer-TropschMössbauer spectroscopy To reference this document use: http://resolver.tudelft.nl/uuid:665df322-618d-475e-9bb7-b3cf5da1dec8 DOI https://doi.org/10.1016/j.cattod.2020.04.037 ISSN 0920-5861 Source Catalysis Today, 369, 144-149 Part of collection Institutional Repository Document type journal article Rights © 2021 P. Gonugunta, A.I. Dugulan, G. Leendert Bezemer, E.H. Brück Files PDF 1_s2.0_S0920586120302315_main.pdf 4.66 MB Close viewer /islandora/object/uuid:665df322-618d-475e-9bb7-b3cf5da1dec8/datastream/OBJ/view