The Fischer–Tropsch synthesis (FTS) has been studied for decades; however, it is very difficult to simultaneously obtain a high one-pass CO conversion and a high selectivity of long-chain (C₅₊) hydrocarbons. A layered CoMn/TiO₂ catalyst is fabricated and used as an efficient catalyst in FTS. The unique layered structure of the CoMn/TiO₂ catalyst effectively inhibits the agglomeration of Co nanoparticles and enhances the diffusion of the reactants and products in FTS. The catalyst exhibits superior activity, high C₅₊ selectivity, and excellent stability due to its unique multiple mesopores structure as well as high cobalt dispersion. Even at a nearly complete one-pass CO conversion (>95%), which is considered to be a very harsh condition in the FTS reaction, CoMn/TiO₂ still exhibits a high C₅₊ hydrocarbon selectivity of around 93% and a very low selectivity of undesired C1 products (CH₄ and CO₂) of below 4.5%.

中文翻译：

---

在高选择性钴催化剂上实现费-托合成的完整单程转化

费托合成（FTS）已经研究了数十年。然而，同时获得高单程CO转化率和长链（C ₅₊）烃的高选择性非常困难。制备了层状CoMn / TiO ₂催化剂并将其用作FTS中的有效催化剂。CoMn / TiO ₂催化剂独特的层状结构可有效抑制Co纳米颗粒的团聚，并增强FTS中反应物和产物的扩散。催化剂表现出优异的活性，高C ₅₊由于其独特的多重中孔结构以及高钴分散度，具有很高的选择性和出色的稳定性。即使在接近完全的单程CO转化率（> 95％）（这在FTS反应中被认为是非常苛刻的条件）下，CoMn / TiO ₂仍显示出约93％的高C ₅₊烃选择性和非常高的不良的C1产物（CH ₄和CO ₂）的选择性低于4.5％。