The kinetics of carbon monoxide methanation over Ni-Mo-SiO2 catalyst were studied. The model was developed based on catalyst tests carried out in a fixed-bed reactor at a reaction temperature varied from 300 °C to 450 °C under a pressure from 0.1 to 1.5 MPa with a weight hourly space velocity of 60,000 mL h−1 g−1. An orthogonal design method was adopted to select test points with temperature, pressure, and feed compositions as factors. Based on the experimental observations, a Langmuir–Hinshelwood equation kinetic model was formulated and its parameters were estimated by fitting the experimental data implemented in MATLAB. The activation energy for the formation of CH4 was 45.4 kJ mol−1 and comparing the experimental and model-predicted data showed that the proposed model gives a reasonable fit with an average absolute relative deviation of ±9.8%.

中文翻译：

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水热法制备介孔Ni-Mo催化剂上一氧化碳甲烷化的动力学研究

研究了Ni-Mo-SiO2催化剂上一氧化碳甲烷化的动力学。该模型是基于在固定床反应器中进行的催化剂测试而开发的，反应温度为 300 °C 至 450 °C，压力为 0.1 至 1.5 MPa，重时空速为 60,000 mL h-1 g -1。采用正交设计方法，以温度、压力和进料成分为因素选择试验点。基于实验观察，建立了 Langmuir-Hinshelwood 方程动力学模型，并通过拟合在 MATLAB 中实现的实验数据来估计其参数。CH4 形成的活化能为 45.4 kJ mol-1 并且比较实验和模型预测数据表明所提出的模型给出了合理的拟合，平均绝对相对偏差为 ±9.8%。