Abstract This investigation aimed to develop a series of new spinel-oxide catalysts with the general formula MnxCo1-xCo2O4 (0.0 ≤ x ≤ 1.0) and testing their activity towards N2O direct decomposition. These catalysts have been prepared by the microwave-assisted co-precipitation method and the subsequent calcination at 500 °C. Characterization results revealed that utilized preparation protocol has led to the development of pure spinel phases with nanorods morphology. N2O decomposition experiments indicated that the prepared catalysts were active and the best performance was exhibited by Mn0.75Co0.25Co2O4 catalyst. The activity of the Mn0.75Co0.25Co2O4 was enhanced by doping with K-ions at optimal concentration (nK/(nCo + nMn) = 0.025). The co-existence of some contaminants (O2, NO, H2O vapor) in the reactor feed revealed different inhibitory levels on the performance of the K0.025Mn0.75Co0.25Co2O4 catalyst. The inhibitory order was O2

中文翻译：

---

草酸盐前驱体热分解制备的MnxCo1-xCo2O4纳米棒的N2O分解活性研究

摘要 本研究旨在开发一系列通式为MnxCo1-xCo2O4 (0.0 ≤ x ≤ 1.0) 的新型尖晶石氧化物催化剂，并测试其对N2O 直接分解的活性。这些催化剂是通过微波辅助共沉淀法和随后在 500 °C 下煅烧制备的。表征结果表明，利用制备方案已导致具有纳米棒形态的纯尖晶石相的发展。N2O分解实验表明所制备的催化剂具有活性，Mn0.75Co0.25Co2O4催化剂表现出最佳性能。Mn0.75Co0.25Co2O4 的活性通过以最佳浓度 (nK/(nCo + nMn) = 0.025) 掺杂 K 离子而增强。某些污染物（O2、NO、反应器进料中的 H2O 蒸气）显示出对 K0.025Mn0.75Co0.25Co2O4 催化剂性能的不同抑制水平。抑制顺序是 O2