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Cobalt-based Nanoreactors in Combined Fischer-Tropsch Synthesis and Hydroprocessing: Effects on Methane and CO$_{2}$ Selectivity

Straß-Eifert, A.; Sheppard, T. L.; Becker, H.; Friedland, J.; Zimina, A.; Grunwaldt, J.-D.; Güttel, R.

Abstract:
Fischer-Tropsch synthesis: Four types of bi-functional catalysts with cobalt nanoparticles supported on meso- or microporous silicates or aluminosilicates are investigated regarding the obtained CO$_{2}$ and CH$_{4l}$ selectivity under low-temperature Fischer-Tropsch reaction conditions. In situ x-ray absorption spectroscopy results under industrially relevant conditions reveal that strong cobalt-support interactions and oxidized cobalt species are the main factors determining the selectivity depending on the specific support material used.

The production of liquid hydrocarbons from syngas (CO and H$_{2}$) via the combined Fischer-Tropsch (FT) synthesis and hydroprocessing (HP) is a promising strategy to provide valuable chemicals and fuels based on renewable feedstocks. High yields of liquid products are essential for industrial implementation since short-chain side products like methane and CO$_{2}$ reduce the overall carbon efficiency, which holds true especially for bi-functional Co/zeolite catalysts. In order to investigate the influence of the support material properties on the methane and CO$_{2}$ selectivities in the combined FT and HP reaction, we synthesized four well-defined catalyst materials with similar cobalt particle sizes. ... mehr


Verlagsausgabe §
DOI: 10.5445/IR/1000139763
Veröffentlicht am 12.11.2021
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Technische Chemie und Polymerchemie (ITCP)
Institut für Katalyseforschung und -technologie (IKFT)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2021
Sprache Englisch
Identifikator ISSN: 1867-3880, 1867-3899
KITopen-ID: 1000139763
HGF-Programm 38.03.02 (POF IV, LK 01) Power-based Fuels and Chemicals
Weitere HGF-Programme 56.98.01 (POF IV, LK 01) Programmleitung MML
Erschienen in ChemCatChem
Verlag Wiley-VCH Verlag
Vorab online veröffentlicht am 04.10.2021
Nachgewiesen in Web of Science
Scopus
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