Studies On Cobalt Based And Nickel Based Catalysts For Combined Partial Oxidation And CO₂ Reforming Of CH₄

The reaction of partial oxidation of methane to syngas has been one of the most promising CH₄ utilization approaches. But it will lead to hot-spot in catalyst bed for it is exothermic reaction and the mixture of CH₄ and O₂ is explosive gas, which are danger for large industrial scale. In recent years, the reaction of CO₂ reforming of CH₄ to syngas has been focused on by industrial and academic workers all over the world. But it is difficult to be applied in industry because this reaction is highly energy consumption and the catalyst for this reaction is prone to carbon deposition. Recently, the combined partial oxidation and CO₂ reforming of CH₄ has been attracted attention by researchers all over the world for it have many advantages compared to partial oxidation of CH₄ and CO₂ reforming of CH₄. Firstly, by coupling the exothermic partial oxidation reaction with the endothermic reforming reaction, the methane-to-syngas conversion can be operated in a safer manner than the reforming process. Secondly, by changing the feed composition, one can control the product ratio of H₂/CO according to the need of the postprocess. Thirdly, the combined reaction can decrease the carbon deposition greatly than the CO₂ reforming of CH₄ reaction. Finally, the combined reaction can reduce the consumption of air, that is it can reduce the content of N₂ in syngas, and in many cases the air separated equipment is not needed, so it can economize the investment of operation. In a word, the combined reaction has the advantage of both partial oxidation of methane and CO₂ reforming of CH₄, and it...