عنوان مقاله [English]
Hydrogen is a clean fuel that Steam Methane Reforming (SMR) has the highest efficiency to produce compared to the other ways. Temperature, pressure, steam to methane (S/C) ratio, and catalyst play essential roles in the SMR process. In this paper, a numerical simulation method is performed using Cantera software in Python programming language to produce syngas (H2+CO) and hydrogen in the SMR process over Nickel- and Rhodium-based catalysts. The simulation is done in 600-1300K, S/C ratio of 2-4, and pressure of 0.25-4 bars to determine a suitable catalyst and the best range to produce hydrogen, syngas and the reduction of surface coverage. Methane conversion is also studied to compare the operation of Nickel and Rhodium. The results demonstrate that the preferred ranges for hydrogen production over the Nickel are 1000-1100K, S/C ratio of 2.5-3 and pressure of 1-2 bars, and over Rhodium 700-800K, the S/C ratio of 3-3.5, and the pressure of 1-2 bars. The best range for syngas production over Nickel is 1200-1300K, S/C ratio of 2.5-3 and pressure of 1-2 bar and over Rhodium is 1000-1100K, the S/C ratio of 3-3.5, and the pressure of 1-2 bars. However, Rhodium in the same condition is more active than Nickel. But, surface coverage formation is lower over Nickel than the other. Therefore, Nickel is suggested to produce hydrogen via Steam Methane Reforming.