Abstract The catalytic activity and properties of hydrothermally derived nanocrystalline ceria, as well as ceria doped substitutionally by 10 mol. % of Mn, Fe, Co, Ni, Cu and Zn, were investigated. It was determined that in the course of synthesis and under the synthesis conditions applied Mn, Cu and Zn enter the ceria crystal lattice, while for other investigated metals additional crystal phases appear. The presence of a foreign cation did not affect the ceria crystallite size, particle size or specific surface area. Nanocatalysts with crystallite and particle sizes close to 5 nm and with specific surface area around 200 m2 g-1 were prepared. However, except for Mn, a negative influence of dopants on coarsening resistance has been observed. Doping with Cu and Mn significantly enhanced the ceria catalytic activity, slight improvement was observed for samples with Zn and Fe, while samples with Ni and Co showed a decreased catalytic activity.

中文翻译：

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水热衍生的 Mn、Fe、Co、Ni、Cu 和 Zn 掺杂氧化铈纳米催化剂的比较研究

摘要 水热衍生的纳米晶氧化铈以及 10 mol 置换掺杂氧化铈的催化活性和性能。研究了 Mn、Fe、Co、Ni、Cu 和 Zn 的百分比。确定在合成过程中和在应用的合成条件下，Mn、Cu 和 Zn 进入氧化铈晶格，而对于其他研究的金属，出现额外的晶相。外来阳离子的存在不影响氧化铈微晶尺寸、粒度或比表面积。制备了微晶和粒径接近 5 nm 且比表面积约为 200 m2 g-1 的纳米催化剂。然而，除了 Mn，已观察到掺杂剂对抗粗化性的负面影响。Cu和Mn的掺杂显着增强了氧化铈的催化活性，