the effect of cobalt to iron ratio on novel perovskite catalysts for fischer-tropsch synthesis

Fischer-tropsch synthesis is a direct method to produce fuels with low aromatic and sulfur content. among various types of catalysts used for fischer-tropsch synthesis, the perovskite catalysts are more effective in a wide range of chemical reactions and have significant applications for gas-solid reactions. this study investigates the application of lafe(1−x)coxo3 perovskite catalyst with various co to fe ratios in fischer tropsch synthesis. the perovskite oxides are prepared via the sol-gel method and characterized using temperature-programmed reduction (h2-tpr), x-ray diffraction (xrd), transmission electron micrographs (tem), and bet surface area techniques. in addition, the catalyst is tested in a fixed bed reactor at 240, 260, 280, and 300 °c and 20 barg pressure. the results show that the crystal structure of lafe(1−x)coxo3 perovskite catalyst is changed and demonstrated high activity due to the iron active site; therefore, by increasing the amount of iron catalyst structure shifts to the orthorhombic and the co conversion increases noticeably. results show that the lafe0.7co0.3o3 catalyst at 280 °c is a possible candidate for fischer-tropes synthesis.