摘要：SummaryExploiting new carbon supports with adjustable metal-support interaction and low price is of prime importance to realize the maximum active iron efficiency and industrial-scale application of Fe-based catalysts for Fischer-Tropsch synthesis (FTS). Herein, a simple, tunable, and scalable biochar support derived from the sugarcane bagasse was successfully prepared and was first used for FTS. The metal-support interaction was precisely controlled by functional groups of biosugarcane-based carbon material and different iron species sizes. All catalysts synthesized displayed high activities, and the iron-time-yield of Fe4/Cbioeven reached 1,198.9 μmol gFe−1s−1. This performance was due to the unique structure and characteristics of the biosugarcane-based carbon support, which possessed abundant C−O, C=O (η1(O) and η2(C, O)) functional groups, thus endowing the moderate metal-support interaction, high dispersion of active iron species, more active ε-Fe2C phase, and, most importantly, a high proportion of FexC/Fesurf, facilitating the maximum iron efficiency and intrinsic activity of the catalyst.Graphical abstractDisplay OmittedHighlights•A kind of carbon support, derived from the sugarcane bagasse, is prepared•This biochar catalyst reaches an excellent FTY value in Fischer-Tropsch synthesis•Functional groups and Fe species sizes regulate metal-support interactions•Superior performance is due to abundant functional groups and ε-Fe2CChemistry; Inorganic chemistry; Catalysis; Engineering
