The CO hydrogeneration via the Fischer-Tropsch reaction (FTO) has been carried out over spinel bimetallic Fe-M^II (M=Fe,Mn,Co,Ni) ferrite. The catalytic performance shows that Fe-Mn ferrite has the highest lower olefin selectivity of 54.5%, while Fe-Ni ferrite has the highest CH₄ selectivity. The initial structure of the ferrite is characterized by scanning electron microscopy, energy-dispersive spectrometry, X-ray diffraction (XRD), and Raman spectroscopy. The structure evolution was also characterized by in situ XRD. The results revealed that the doping of a second metal decreases the grain size and microsphere size. Also, the doping of Mn promotes the reduction of Mn_xFe_3−xO₄ phase to Mn_xFe_1−xO phase; however, further reduction of Fe²⁺ in the Mn_xFe_1-xO phase is inhibited, while the doping of Co and Ni favors the reduction of M_xFe_3-xO₄ to alloy phase and metal phase. χ-Fe₅C₂ phase was found for all the spent catalysts, a small ε-Fe₂C phase was also detected from spent Fe-Mn ferrite, and θ-Fe₃C determined to be the principle carbide for the spent Fe-Co sample.

通过费-托反应（FTO）进行的CO氢化反应是在尖晶石双金属Fe -M ^II（M = Fe，Mn，Co，Ni）铁氧体上进行的。催化性能表明，Fe-Mn铁氧体的较低烯烃选择性最高，为54.5％，而Fe-Ni铁氧体的CH ₄选择性最高。铁氧体的初始结构通过扫描电子显微镜，能量分散光谱，X射线衍射（XRD）和拉曼光谱来表征。结构演化还通过原位XRD表征。结果表明，第二金属的掺杂减小了晶粒尺寸和微球尺寸。另外，Mn的掺杂促进Mn _x的还原Fe _{3- x} O ₄相到Mn _x Fe _{1- x} O相；但是，抑制了Mn _x Fe _{1- x} O相中Fe ^2+的进一步还原，而Co和Ni的掺杂有利于将M _x Fe _{3- x} O ₄还原为合金相和金属相。χ -铁₅ c ^ ₂相被发现的所有废催化剂，小ε -铁₂也被从废铁-锰铁氧体检测C相，以及θ的Fe ₃下测定成为用过的Fe原理碳化物合作样品。