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Optimization of K-Cu-Mo promoted iron Fischer-Tropsch catalyst. A design-of-experiments approach

Poster presented at 53. Jahrestreffen Deutscher Katalytiker - GEATS, Weimar, virtuell, 11.-13.3.2020
: Wolke, Florian; Voigt, Markus; Medicus, M.; Reichelt, Erik; Jahn, Matthias

Poster urn:nbn:de:0011-n-6158130 (11 MByte PDF)
MD5 Fingerprint: 0c54d6c402c30b64a1300e64c822a013
Erstellt am: 8.12.2020

2020, 1 Folie
Jahrestreffen Deutscher Katalytiker <53, 2020, Online>
Bundesministerium fur Wirtschaft und Energie BMWi (Deutschland)
03EIV031B; SynLink
Synthetic e-Fuels as key enabler for Sector Linking
Poster, Elektronische Publikation
Fraunhofer IKTS ()
Fischer-Tropsch synthesis; higher alcohols; design of experiments; catalyst; Power-to-X

Due to its superior selectivity to oxygenates, its water-gas-shift activity and its eco-friendliness combined with low price-level, iron represents a promising catalyst metal to convert syngas into valuable chemicals like higher alcohols via low-temperature Fischer-Tropsch synthesis [1]. Usually, disadvantages of using iron like relatively low catalytic activity and unsatisfying product selectivity are addressed by adding promoting elements like potassium, copper or molybdenum. While potassium and molybdenum tend to increase alcohol selectivity and average chain length of the products, copper is expected to increase catalytic activity [2-4]. Since mutual affections of the individual promoting effects exist, a well-structured comparative study, based on design-of-experiments (DoE) principles was conducted. Triple promoted, precipitated Fe-K-Cu-Mo were synthesized and catalytically tested following a defined experimental schedule. The single effects and the mutual interdependencies of the promoting elements and their affection of the catalytic performance was subsequently evaluated by using an analysis-of-variance approach.