Mixed metal oxides consisting of Zn and Fe were prepared by calcining ZnFe-mixed metal hydroxide at respective temperature of 400, 500 and 600°C. According to X-ray diffraction, the calcination resulted in the evolution of wurtzite ZnO partially with ZnFe₂O₄ spinel at high temperature. The local structure around Fe and Zn measured by X-ray absorption spectroscopy did not show difference upon temperature, suggesting the intimate association between zinc oxide and iron oxide. The magnetic property of mixed metal oxide was paramagnetic for calcination temperature of 400 and 500°C; whereas superparamagnetism was observed in 600°C calcined sample. The specific surface area and pore volume was the highest for mixed metal oxide calcined at 500°C showing 66.4 m²/g and 0.908 cm³/g, respectively. Temperature programmed desorption of ammonia revealed that the ZnFe-mixed metal oxide had majorly strong Lewis acid site compared with previously reported ZnOs. The acid strength was proportional to the calcination temperature, and however, total acidity decreased for 600°C calcined oxide. Taking into account the phase, porosity and acidity, the ZnFe-mixed metal oxide prepared at 500°C could be the most advantageous as acid catalysts.

通过在400、500和600℃分别的温度下煅烧ZnFe混合的金属氢氧化物来制备由Zn和Fe组成的混合金属氧化物。根据X射线衍射，在高温下煅烧导致纤锌矿型ZnO与ZnFe ₂ O ₄尖晶石一起部分析出。X射线吸收光谱法测得的Fe和Zn周围的局部结构在温度下未显示差异，表明氧化锌和氧化铁之间存在紧密的缔合。混合金属氧化物的磁性能在400和500°C的煅烧温度下是顺磁性的。而在600°C煅烧的样品中观察到超顺磁性。在500°C下煅烧的混合金属氧化物的比表面积和孔体积最高，显示66.4  m ²/ g和0.908  cm ³ / g。程序升温的氨解吸表明，与先前报道的ZnO相比，混合ZnFe的金属氧化物主要具有较强的路易斯酸位。酸强度与煅烧温度成正比，但是，对于600°C的煅烧氧化物，总酸度降低。考虑到相，孔隙率和酸度，在500℃下制备的ZnFe混合金属氧化物作为酸催化剂可能是最有利的。