Polymetallic fibers of 13Fe2Co/ZrO₂ and 13Fe2Co100Zr were prepared by impregnation and an in situ electrospinning technique. The iron, cobalt and zirconium components in the 13Fe2Co100Zr catalyst are more dispersed than the impregnation one, as indicated by SEM/EDS, TEM, XRD, H₂-TPR and N₂ adsorption techniques. CO₂ conversion increased by a factor of 2 and the selectivity to C₂⁺ hydrocarbons increased 15 times on the 13Fe2Co100Zr polymetallic fibers compared with the 13Fe2Co/ZrO₂ supported catalyst. The 0.18 s⁻¹ TOF (turnover frequency) of the polymetallic fibers exceeded that of the supported catalyst (0.12 s⁻¹). Potassium addition to the 13Fe2Co100Zr catalyst further improved the selectivity to C₂⁼–C₄⁼, which increased to 27.5% on a 10K13Fe2Co100Zr catalyst. The polymetallic fibers showed stable activity over the reaction period. The activity of the 13Fe2Co/ZrO₂ catalyst, however, decreased rapidly due to metal sintering as observed with TEM and XRD. The in situ electrospinning technique can effectively prevent metal sintering and provide high CO₂ conversion efficiency.

通过浸渍和原位电纺丝技术制备了13Fe2Co / ZrO ₂和13Fe2Co100Zr多金属纤维。如SEM / EDS，TEM，XRD，H ₂ -TPR和N ₂吸附技术所示，13Fe2Co100Zr催化剂中的铁，钴和锆组分比浸渍剂更分散。与13Fe2Co / ZrO ₂负载的催化剂相比，在13Fe2Co100Zr多金属纤维上，CO ₂转化率提高了2倍，对C ₂ ⁺烃的选择性提高了15倍。多金属纤维的0.18 s ^-1 TOF（周转频率）超过了负载型催化剂的0.12 s ^-1）。向13Fe2Co100Zr催化剂中添加钾可进一步提高对C ₂ ⁼ –C ₄ ⁼的选择性，在10K13Fe2Co100Zr催化剂上，选择性提高至27.5％。多金属纤维在反应期间显示出稳定的活性。然而，如通过TEM和XRD所观察到的，由于金属烧结，13Fe2Co / ZrO ₂催化剂的活性迅速降低。原位电纺丝技术可以有效地防止金属烧结，并提供高的CO ₂转化效率。