In the methanol autothermal reforming reaction, the required heat is provided by the methanol oxidation reaction, so the activity of the methanol oxidation catalyst directly affects the yield of hydrogen. Pt/γ?Al2O3 catalysts have attracted wide attention because of its high reactivity, but their stability is poor, and the Pt activity center is easy to agglomerate. In order to solve the above problems, Pt/γ?Al2O3 catalysts were prepared by rotary microemulsion, and Pt/γ?Al2O3 catalysts were characterized by BET, XRD and other methods, and the effects of cyclohexane mass fraction, mass ratio of PEG?600 and n?butanol on the oxidation activity of methanol were investigated. The results show that the microemulsion method could improve the dispersion and utilization rate of the active components. By changing the mass fraction of cyclohexane and the mass ratio of PEG?600 to n?butanol, the active component Pt can be uniformly and firmly loaded on γ?Al2O3, and the sintering resistance of the catalyst can be improved. The Pt/γ?Al2O3 catalyst prepared under the condition of cyclohexane mass fraction of 50% and the mass ratio of PEG?600 to n?butanol is 3∶7, and the catalytic activity of methanol oxidation can reach 88%.
