Abstract Cerium-containing cobalt-aluminum layered double hydroxide was successfully synthesized via coprecipitation followed by hydrothermal treatment. Molar ratios of metal cations were predetermined as following: Co2+/(Al3+ + Ce3+) = 3 and Ce3+/(Al3+ + Ce3+) = 0.05. According to X-ray diffraction data, the obtained sample was well crystallized single-phase product with a hydrotalcite-like structure. The presence of cerium was confirmed by elemental analysis. The synthesized material consisted of hexagonal plate-like particles with an average size of 277 nm. The study of thermal behavior showed that the compound decomposed with the formation of oxides mixture, which is typical for layered double hydroxides. Its rehydration ability was expressed very weakly and the "memory effect" was observed only after heat treatment at a temperature not higher than 200°C.

中文翻译：

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Co/AlCe层状双氢氧化物的合成及热行为

摘要 采用共沉淀和水热处理的方法成功合成了含铈的钴铝层状双氢氧化物。金属阳离子的摩尔比预定如下：Co2+/(Al3++Ce3+)=3和Ce3+/(Al3++Ce3+)=0.05。根据X射线衍射数据，所得样品为结晶良好的单相产物，具有类水滑石结构。通过元素分析证实了铈的存在。合成材料由平均尺寸为 277 nm 的六边形板状颗粒组成。热行为研究表明，该化合物分解形成氧化物混合物，这是层状双氢氧化物的典型特征。它的补液能力非常弱，“记忆效应”