Work

Study on iron based Fischer–Tropsch synthesis catalyst supported on mesoporous silica promoted by alkali and transition metals

Year: 2025

Type: article

Abstract: Fischer Tropsch synthesis provides a non-petroleum pathway for the production of high value liquid fuels and long-chain alpha olefins from syngas. However, regulating product distribution to promote the formation of high value product while maintaining low selectivity for C1 by-products (CH 4 and CO 2 ) remains a significant challenge. Iron based composite catalysts were prepared via dual doping and modification, i.e., alkali metals and transition metals using mesoporous silica SBA-15 as the support. The catalyst was characterized by XPS, XRD, H 2 -TPR, CO 2 -TPD, TEM, Roman and other methods, and the relationship between the catalyst structure and catalytic performance was studied. At 1 MPa and 300 °C, The CO conversion rate of Fe–Zn–K/SBA-15 (30% − 10% 2%/100%) catalyst is 62.4%, methane selectivity is reduced to 4.6%, carbon dioxide selectivity is 32.6%, olefin ratio is 7.6%, and long-chain hydrocarbon C 5 + selectivity is 62.8%.

Source: Discover Chemical Engineering

DOI: 10.1007/s43938-025-00081-0