The kinetics of the steam reforming of methane was studied on 0.5 wt% Rh–15 wt% Ni/MgAl₂O₄ catalyst. The variation of methane conversion with contact time (\({\text{W}}/{\text{F}}_{{{\text{CH}}_{4} ,0}}\)) was recorded in the temperature range of 450 to 600 °C, at three different pressures of 1, 4 and 6 bar, and at steam to carbon ratio (S/C) of 2, 5 or 6. Before the kinetic experiments, a check for external and internal mass transfer limitations was also performed. The experimentally obtained data was tested for different earlier proposed kinetic models, and parameters were calculated using non-linear least square optimization. Among the different kinetic models tested, the kinetic model proposed by Al-Ubaid and Wolf was found to be the most suitable. Reaction order of 0.21 for methane and 0.16 for water with an apparent activation energy of 75.3 kJ/mol was obtained.

在0.5 wt％Rh-15 wt％Ni / MgAl ₂ O ₄催化剂上研究了甲烷蒸汽重整的动力学。甲烷转化率随接触时间的变化（\（{\ text {W}} / {\ text {F}} _ {{{\ text {CH}} _ {4}，0}} \））记录在450至600°C的温度范围内，三种不同的压力1、4和6 bar以及水蒸气碳比（S / C）为2、5或6的情况下。还检查了内部和外部传质限制。对不同的较早提出的动力学模型测试了实验获得的数据，并使用非线性最小二乘法优化计算了参数。在测试的不同动力学模型中，发现Al-Ubaid和Wolf提出的动力学模型是最合适的。甲烷的反应级为0.21，水的反应级为0.16，表观活化能为75.3 kJ / mol。