The coimpregnation of the glucose and cobalt nitrate aqueous solution into SiO₂ followed by the carbonization in an inert gas was demonstrated for the preparation of the directly reduced Co-xC/SiO₂ (x: glucose to SiO₂ mass ratio) Fischer–Tropsch (FT) catalysts. The as-prepared Co-xC/SiO₂ (x = 0.1, 0.5, 1.0, 1.5) without any pretreatment was evaluated for FT synthesis under typical conditions. Significantly, the completely reduced Co-xC/SiO₂ were obtained when the x was at or above 1.0, and the maximum normalized FT activity (cobalt-time-yield, CTY) of 3.5 × 10^–4 mol_CO·g^–1_Co·s^–1 over Co-1C/SiO₂ was doubled the activity of the high-temperature reduced Co/SiO₂. Moreover, light hydrocarbons (C₁ ∼ C₄) were favorably formed over Co-xC/SiO₂, and the product distribution can be regulated via simply changing the ratio of the glucose to SiO₂. The simple procedure and the cheap glucose make the directly reduced Co-xC/SiO₂ catalysts very promising for the development of a more efficient FT process.

中文翻译：

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直接合成还原的Co-C / SiO ₂作为费-托合成的高效催化剂

证明了将葡萄糖和硝酸钴水溶液共浸渍到SiO _2中，然后在惰性气体中碳化，可以制备直接还原的Co- x C / SiO ₂（x：葡萄糖与SiO _2的质量比）。 （FT）催化剂。在典型条件下，对未经任何预处理的Co- x C / SiO ₂（x = 0.1、0.5、1.0、1.5）进行了合成FT合成的评估。重要的是，当x等于或大于1.0时，可以获得完全还原的Co- x C / SiO ₂，并且最大归一化FT活性（钴时间-产率，CTY）为3.5×10 ^-4 mol _COCo-1C / SiO _2上的·g ^–1 _Co ·s ^–1是高温还原的Co / SiO ₂的活性的两倍。此外，轻质烃（C ₁〜C ^ ₄）在Co-XC /二氧化硅被良好地形成₂，产物分布可以通过简单地改变葡萄糖的比率为SiO调节₂。简单的程序和廉价的葡萄糖使得直接还原的Co- x C / SiO ₂催化剂对于开发更有效的FT工艺非常有前途。