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Bridging the gap between industry and synchrotron: Operando study at 30 bar over 300 h during Fischer-Tropsch synthesis

Loewert, Marcel; Serrer, Marc-André; Carambia, Tiziana; Stehle, Matthias; Zimina, Anna; Kalz, Kai; Lichtenberg, Henning; Saraci, Erisa; Pfeifer, Peter; Grunwaldt, Jan-Dierk

In order to reduce CO$_{2}$ emissions, it is necessary to substitute fossil fuels with renewable energy using CO$_{2}$ as a carbon feedstock. An attractive route for synthetic fuel production is the Fe- or Co-catalysed Fischer–Tropsch process. A profound knowledge of the catalyst deactivation phenomena under industrial conditions is crucial for the process optimisation. In this study, we followed the structural changes of a Co–Ni–Re/γ-Al$_{2}$O$_{3}$ catalyst for >300 hours at 30 bar and 250 °C during the Fischer–Tropsch synthesis operando at a synchrotron radiation facility. The advanced setup built for operando X-ray diffraction and X-ray absorption spectroscopy allows simultaneous and robust monitoring of the catalytic activity even over 300 h time on stream. We found three activity regimes for the Co–Ni–Re/γ-Al$_{2}$O$_{3}$ catalyst during 310 h of operation. Fast decline in activity was observed during the initiation phase in the first hours of operation due to liquid film formation (mass transport limitations). Furthermore, solid state reactions and carbon depositions were found while continuing the exposure of the catalyst to harsh temperature conditions of 250 °C. ... mehr

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Verlagsausgabe §
DOI: 10.5445/IR/1000118155
Veröffentlicht am 05.07.2020
DOI: 10.1039/C9RE00493A
Web of Science
Zitationen: 1
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Katalyseforschung und -technologie (IKFT)
Institut für Mikroverfahrenstechnik (IMVT)
Institut für Technische Chemie und Polymerchemie (ITCP)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2020
Sprache Englisch
Identifikator ISSN: 2058-9883
KITopen-ID: 1000118155
HGF-Programm 37.03.01 (POF III, LK 01) Catalysts and Mechanisms
Weitere HGF-Programme 56.98.01 (POF III, LK 01) Betrieb in MML
Erschienen in Reaction chemistry & engineering
Verlag Royal Society of Chemistry (RSC)
Band 5
Heft 6
Seiten 1071-1082
Vorab online veröffentlicht am 08.04.2020
Nachgewiesen in Web of Science
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