The partial oxidation of methane to synthesis gas was investigated over  the alkaline earth metal oxide supported Co catalysts. Only MgO has  proved to be a suitable support. The reaction behavior of the  MgO-supported  Co catalysts was significantly influenced by the calcination  temperature (Tc) and Co loading. The 24 wt% Co/MgO catalyst  precalcined at 800�C provided a high and stable activity; those  pre-calcined at higher temperatures provided a lower stable activity  and those pre-calcined at lower temperatures a lower stability. Because  of the two oxidative states of Co, the structural characteristics of  the Co catalysts are strongly affected by the nature of the support,  calcination temperature, and Co loading. In the  24 wt% MgO-supported catalysts, only a solid solution of CoO and MgO  was identified for Tc = 800�C, while one or two of the following compounds, Co3O4 and MgCo2O4, were additionally detected for Tc < 800�C. Correlations among the species present in the catalyst, its reducibility, and its catalytic performance were established.

Methane partial oxidation to synthesis gas over alkaline earth metal oxide supported Co catalysts: A study of structure-property relationships

244th National Meeting (2012)

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