Breakthrough in Chemicals and Chemistry: New Catalysts Boost Fischer-Tropsch Synthesis Performance

Investigators at the Federal University in Rio de Janeiro, Brazil have made significant advancements in the field of chemicals and chemistry. Researchers have developed cobalt core-shell catalysts, which have significantly enhanced catalytic performance in Fischer-Tropsch synthesis. This breakthrough study has explored the impact of pore diameter on the performance of mesoporous silica-coated cobalt oxide core-shell catalysts. The research has been funded by the Coordenao de Aperfeioamento de Pessoal de Nvel Superior and the Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES).

Key Takeaways:

• The researchers have successfully synthesized cobalt core-shell catalysts with a constant shell thickness and varying porosity, achieving a core diameter of 30-34 nm and a SiO2 shell thickness of 32.5-34.5 nm.
• The study reveals a significant change in product distribution when using the core-shell catalyst, with a 17% increase in selectivity toward the C19-C24 fraction and a 24% decrease in the C25-C29 fraction when reducing the pore size from 9.2 nm to 3.5 nm.
• The silica shell provided a protective effect on the active phase, preventing sintering in the spent encapsulated catalysts.
• The researchers observed a specific surface area of 236-771 m2/g and average pore diameters of 3.5-11.8 nm, indicating a significant impact of pore size on catalyst performance.
• The study highlights the potential of cobalt core-shell catalysts in enhancing catalytic performance and suggests further research in optimizing pore size and shell thickness for improved Fischer-Tropsch synthesis.

Statistics:

• Average core diameter: 30-34 nm
• Total diameter: 97-103 nm
• SiO2 shell thickness: 32.5-34.5 nm
• Specific surface area: 236-771 m2/g
• Average pore diameters: 3.5-11.8 nm
• Increase in selectivity toward the C19-C24 fraction: 17%
• Decrease in the C25-C29 fraction: 24%

Sources:

• Influence of Textural Properties of Co@sio 2 Catalysts On the Performance of Fischer-tropsch Synthesis. ACS Omega, 2025.
• NewsRx LLC. Findings from Federal University Provide New Insights into Chemicals and Chemistry (Influence of Textural Properties of Co@sio 2 Catalysts On the Performance of Fischer-tropsch Synthesis). News of Science. November 2, 2025; p 563.