Support material variation for the MnxOy-Na2WO4/SiO2 catalyst

• SiO2 appears to be the best support material for MnxOy-Na2WO4.
• SiC, TiO2-rutile and Fe2O3-based support materials are possible alternatives.
• They have better active sites, but in lower numbers.
• Thus, optimized preparation procedures could result in promising improvements in catalytic performance.

MnxOy-Na2WO4/SiO2 is an active catalyst for the oxidative coupling of methane, with a remarkable stability and a suitable performance for an industrial application. MnxOy-Na2WO4 was supported on different support materials and the catalytic activity was investigated with a parallel reactor system, allowing a direct comparison of all results. Considering the C2 yield and the potential practical application, SiO2 is indeed the best support material for this catalyst. However, the comparison in an X-S plot with a reference MnxOy-Na2WO4/SiO2 catalyst indicates that SiC, Fe2O3-based oxides and TiO2-rutile are also promising support materials.

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