Ag promoted Co/Al₂O₃ Fischer-Tropsch synthesis catalysts were preparation by wetness impregnation and characterized by nitrogen physisorption, X-ray diffraction, temperature programmed technologies and H₂ chemisorption. Their performances of Fischer-Tropsch synthesis were evaluated in a fixed bed reactor. The result indicated that Ag promoter can improve the dispersion of the cobalt species and facilitate the reduction of CoO to metallic Co. Ag significantly increases the CO conversion rate and C₅⁺ selectivity of Fischer-Tropsch reaction, while decreases the production of methane. However, negative effects were found at higher level Ag loading. As a result, the presence of relatively small quantities of Ag additive can help to enhance the performance of Co/Al₂O₃ catalysts in Fischer-Tropsch synthesis.

采用湿法浸渍法制备了Ag促进的Co / Al ₂ O ₃费-托合成催化剂，并通过氮物理吸附，X射线衍射，程控技术和H ₂化学吸附进行了表征。在固定床反应器中评估了它们的费-托合成性能。结果表明，Ag助催化剂可以改善钴的分散性，并促进CoO向金属Co的还原。Ag显着提高了CO的转化率和C ₅ ⁺费-托反应的选择性，同时减少了甲烷的产生。然而，在较高水平的银负载下发现了负面影响。结果，相对少量的Ag添加剂的存在可以帮助提高费-托合成中的Co / Al ₂ O ₃催化剂的性能。