In the present work, three kinetic expressions for methane steam reforming with different methane and water partial pressures dependence were studied. Methane effectiveness factors were simulated for spherical uniform pellets (those customarily employed), for several temperatures and water/methane ratios (hereafter called R). It was found that all effectiveness factors decreased with temperature as expected for all the kinetics expressions studied. On the other hand, the evolution with R was strongly dependent on the kinetics analyzed, with an important change in effectiveness factors values, ranging from 30 to 400%. This implies that the most convenient active sites distribution might be dependent on R evolution throughout the reactor. Then, two MSR reactors were simulated, loaded with pelletized catalysts with uniform and eggshell in order to get uniform nomenclature active site distributions. It was found that the one loaded with eggshell in order to get uniform nomenclature pellets saves up to 30% catalysts mass with respect to the uniform catalyst distribution for the same CH₄ conversion, reinforcing the importance of active sites distribution.

在目前的工作中，研究了具有不同甲烷和水分压依赖性的甲烷蒸汽重整的三个动力学表达式。针对几种温度和水/甲烷比（以下称为R），模拟了球形均匀粒料（常规使用）的甲烷效率因子。发现对于所有研究的动力学表达式，所有有效性因子均随温度降低。另一方面，R的演化很大程度上取决于所分析的动力学，有效因子值的重要变化范围为30％至400％。这意味着最方便的活性位点分布可能取决于整个反应器中的R演化。然后，模拟了两个MSR反应器，负载均匀且蛋壳状的颗粒状催化剂，以得到均匀的命名活性部位分布。发现对于相同的CH，相对于相同的催化剂分布而言，为了获得均匀的命名颗粒而装有蛋壳的催化剂节省了高达30％的催化剂质量。₄ 转换，加强了主动站点分配的重要性。