Synthesis of a catalyst of Mn–Fe–O by mechano-chemical reaction

• The Fe–Mn–O system was mechanically processed in a high-energy ball-milling.
• Combustion of n-hexane was studied to find out the suitability of the catalyst.
• The route of the solid state transformation of Mn–Fe–O system has been established.
• Solid state transformations are established as a function of the Ecum from milling.
• Complex multicomponent catalysts have been successfully prepared by milling.

In this work, the Fe–Mn–O system was mechanically processed in a high-energy ball-milling. The as milled powders were characterized by X-ray diffraction (XRD), temperature programmed reduction (TPR), X-ray photoelectron spectroscopy (XPS) and specific surface area measurement. Catalytic total oxidation of n-hexane was studied to find out the suitability of the material for VOC decomposition reaction. The route of the solid state transformation of Mn–Fe–O system has been established as a function of the cumulated energy from mechanical milling. Complex multicomponent catalysts, which may be difficult to prepare by conventional high temperature treatment, have been successfully prepared by milling.

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