Bimetal–Organic Framework-Derived CoMn@C Catalysts for Fischer–Tropsch Synthesis

Introducing promoters to cobalt-based catalysts for Fischer–Tropsch synthesis (FTS) has been found be efficient in adjusting their performance converting syngas into long-chain hydrocarbons. High spatial proximity of the promoter and reactive metal is desired maximize effectiveness promoters. In this work, CoMn@C composites were synthesized by one-step carbonization bimetal–organic frameworks (BMOFs: CoMn-BTC). BMOF-derived naturally exhibited that cobalt nanoparticles (NPs) are confined carbon matrix, with a concentrated particle size distribution around 13.0 nm configurated MnO highly dispersed throughout catalyst particles. Mn species preferentially bind surfaces Co NPs rather than embedded lattice. The number Mn–Co interfaces on surface results weakened adsorption H but enhanced strength CO C. Hence, incorporation significantly inhibits production CH4 C2–C4 paraffin boosts light olefin (C2–4=) C5+ production. Furthermore, FTS activity observed Mn-promoted increases increased loading peaks at 2Co1Mn@C due abundance Co–Mn interfaces. These prominent catalytic properties highlight concept synthesizing mixed oxides close contact between metals.