Abstract
A series of Co/Fe hydrotalcite‐like samples were prepared by the traditional co‐precipitation method and treated under microwave irradiation at different temperatures, powers, and for various durations. The resulting samples have been calcined to obtain the nano‐oxide catalysts. Characterization by different physicochemical techniques including X‐ray diffraction (XRD), scanning electron microscopy (SEM), temperature programmed reduction by hydrogen (H2‐TPR), and X‐ray photoelectron spectrometry (XPS) was carried out. The nanocatalysts were also tested in the total oxidation of propene. Comparing both conventional and microwave synthesis, a significant improvement in the catalytic activity was found for the samples prepared with microwave treatment. A minimum of irradiation time, power, and temperature (1 min, 40 W, and 40 °C) is enough to get higher surface area, larger pore size, smaller crystallite size, and a higher amount of reducible species than those for the non‐irradiated solid. All these factors are responsible for the enhancement of the catalytic activity.
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