Fe, Co and Fe/Co catalysts supported on SBA-15 for Fischer-Tropsch Synthesis

• Published in: Catalysis today 2022-07, Vol.394-396, p.150-160
• Main Authors: Toncón-Leal, C.F., Múnera, J.F., Arroyo-Gómez, J.J., Sapag, K.
• Format: Article
• Language: English
• Subjects: Bimetallic and monometallic particles; Fe-Co/SBA-15; Fischer Tropsch Synthesis; Supported catalysts
• ISSN: 0920-5861; 1873-4308
• DOI: 10.1016/j.cattod.2021.07.023

Iron, cobalt, and bimetallic catalysts were synthesized from their cationic solutions and impregnated on mesoporous silica support (i.e., SBA-15) to study their behavior in the catalytic hydrogenation of CO (Fischer-Tropsch Synthesis). N2 adsorption-desorption isotherms at 77 K showed that the mesoporous structure remained unchanged after the metal impregnation; however, the overall textural properties of impregnated materials decreased. SEM images did not show the presence of metal deposits on the support surface; however, both EDS and XRF analysis indicated the presence of iron and cobalt. Both XPS and TPR identified hematite and cobalt oxide as the main components in catalysts. In the Fischer-Tropsch Synthesis, the bimetallic catalysts presented higher activity than monometallic catalysts. The two bimetallic catalysts presented a decrease in methane selectivity and high production of gasoline and hydrocarbon chains larger than decane. [Display omitted] •Fe, Co and Fe/Co catalyst supported on SBA-15 were used in Fischer Tropsch Synthesis.•SBA-15 is a good alternative to stabilize the catalysts for FTS.•Bimetallic catalyst shown a high production of long-chain hydrocarbons.•In the bimetallic catalyst, the coke production was below 5%.•Changes in the Fe/Co ratio produce different type of hydrocarbons.