Catalyst activation is an important and influencing step while determining FTS activity. Taking into account the crucialness of how reduction atmosphere effects the FTS product selectivity, stability, catalytic activity, textural and morphological properties, MOFs mediated Fe-based catalyst ([email protected]) were reduced under five different reduction atmospheres i.e. R-1 (pure CO), R-2 (H₂/CO = 1/4), R-3 (H₂/CO = 1/2), R-4 (H₂/CO = 4) and R-5 (pure hydrogen) and then analyzed under several characterization (SEM, TEM, PXRD, N₂ physisorption, Raman and TG) to unravel the facts and investigate the effects behind differently reduced catalysts and how they took part in FTS catalytic reaction. However, three folds higher CO conversion was yielded by purely CO reduced [email protected] catalyst while H₂ and syngas reduced catalysts yielded more stable reaction coupled to low activity and very high C₅₊ selectivity. Moreover, CO pretreatment gave majorly oxide phase (magnetite, Fe₃O₄), syngas activation yielded large amount of iron carbides (Fe₃C) while H₂ reduced catalyst produced metallic iron. Thus, a strong relationship between reducing gases and FTS catalytic activity was found.

在确定FTS活性时，催化剂的活化是重要且重要的步骤。考虑到还原气氛如何影响FTS产品的选择性，稳定性，催化活性，结构和形态特性的关键性，在5种不同的还原气氛下，即R-1（纯CO），R-2（H ₂ / CO = 1/4），R-3（H ₂ / CO = 1/2），R-4（H ₂ / CO = 4）和R-5（纯氢）然后在几个特征（SEM，TEM，PXRD，N ₂物理吸附，拉曼和TG）来揭示事实，并研究不同还原的催化剂背后的作用以及它们如何参与FTS催化反应。但是，纯CO还原的[电子邮件保护的]催化剂可将CO转化率提高三倍，而H ₂和合成气还原的催化剂可产生更稳定的反应，同时具有较低的活性和很高的C ₅₊选择性。此外，CO预处理主要产生氧化物相（磁铁矿，Fe ₃ O ₄），合成气活化产生大量的碳化铁（Fe ₃ C），而H ₂还原的催化剂产生金属铁。因此，发现还原性气体与FTS催化活性之间有很强的关系。