Study on methane conversion to synthesis gas over nano Pt/MgO catalysts

摘要

A nano Pt/MgO catalyst was prepared by the wet impregnation method. Decomposition of methane and CO₂ reforming of methane (CRM) were investigated by using temperature programmed reaction (TPRa), D₂–CH₄ isotopic exchange reaction, pulse reaction and temperature programmed surface reaction (TPSR). The results show that the nano Pt/MgO catalyst with Pt loading 1.05 wt% has high activity for CH₄ decomposition and the CRM reaction. The results of D₂–CH₄ exchange experiments showed that the Pt/MgO catalyst was very effective for the activation of methane, which is one reason why the catalyst has high activity for CRM. The results of the pulse reaction give a similar idea and the treatment of the catalyst influences the activity for CH₄ activation.