The active component of the catalyst

           The catalysts used in methane oxidation and reformed gas reactions are mainly supported metal catalysts, and their metal active components are divided into two categories: noble metals such as Pd, Ru, Rh, Pt, Ir, etc. and non-precious metals such as Ni, Co, Fe, etc. Ⅷ Group transition metals.

Generally speaking, the order of catalytic activity of Pt, Rh, Ru, Pd, Ir and other noble metal catalysts for the partial oxidation of CH4 is: RhPtRuPdIr,Among them, Pt and Rh have attracted much attention due to their excellent reactivity and anti-carbon deposition properties.

The activity order of the non-precious metal catalysts for the partial oxidation of methane is NiCoFe.The order of catalyst activity for methane steam reforming reaction is: Ru≈RhNiIrPd=PtCO≈Fe.

Therefore, ideal catalysts for autothermal reforming of methane are Rh, Ni, Ru.However, the price of precious metals is relatively expensive. Ni-based catalysts have good catalytic performance and low price, and have good research and application prospects. However, Ni-based catalysts have serious deactivation problems such as carbon deposition