Activated carbon microfiber (ACF)-supported NiMo-based catalysts were prepared for the hydrodesulfurization (HDS) of thiophene. The catalysts were characterized for their physicochemical properties, using the Brunauer–Emmett–Teller, scanning electron microscopy, high-resolution transmission electron microscopy, X-ray photoelectron spectroscopy, X-ray diffraction, temperature-programmed reduction, and temperature-programmed desorption analysis. The effects of the NiO (promoter)-to-MoO₃ (active metal oxide) ratios were experimentally determined on the HDS of thiophene (3% v/v in hydrogen) over the temperature range of 300–370 °C. The catalytic activity tests showed the optimum reaction temperature and weight ratio of NiO to the binary oxide mixture to be 350 °C and 0.25 at 12% (w/w) loading of MoO₃, respectively. The pseudo-first order rate constant and activation energy for the HDS reaction were determined to be 980 × 10^–6 mole thiophenes/gram catalyst min^–1 and 46.3 kJ/mol, respectively, which were greater and smaller, respectively, than those for most of the supported metal catalysts discussed in literature for the HDS of thiophene. The prepared NiMo-based catalyst was found to be stable, with negligible loss of activity observed up to 30 h of the test run.

中文翻译：

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活性炭纤维负载NiMo催化剂上噻吩的加氢脱硫

制备了活性炭超细纤维（ACF）负载的NiMo基催化剂，用于噻吩的加氢脱硫（HDS）。使用Brunauer-Emmett-Teller，扫描电子显微镜，高分辨率透射电子显微镜，X射线光电子能谱，X射线衍射，程序升温还原和程序升温解吸分析对催化剂的理化性质进行了表征。 。在300–370°C的温度范围内，通过实验确定了噻吩的HDS（氢中3％v / v ）对NiO（促进剂）与MoO ₃（活性金属氧化物）之比的影响。催化活性测试表明，在MoO ₃负载量为12％（w / w）时，NiO与二元氧化物混合物的最佳反应温度和重量比为350°C和0.25， 分别。HDS反应的拟一级反应速率常数和活化能分别确定为980×10 ^-6摩尔噻吩/克催化剂min ^–1和46.3 kJ / mol，分别大于或小于噻吩的HDS文献中讨论的大多数负载型金属催化剂。发现所制备的基于NiMo的催化剂是稳定的，在试验运行的30小时内观察到的活性损失可忽略不计。