Hydrothermal microwave‐assisted synthesis of LaFeO3 catalyst for N2O decomposition,Journal of the American Ceramic Society

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Hydrothermal microwave‐assisted synthesis of LaFeO3 catalyst for N2O decomposition
Journal of the American Ceramic Society ( IF 3.5 ) Pub Date : 2020-09-07 , DOI: 10.1111/jace.17463
Egor M. Kostyukhin _{1,

2} , Alexander L. Kustov _{1,

2,

3} , Nikolay V. Evdokimenko _{1,

2} , Andrey I. Bazlov ₄ , Leonid M. Kustov _{1,

2,

3}

Affiliation

Lanthanum orthoferrite powders were synthesized via one‐step hydrothermal reactions under mild conditions using microwave and conventional heating. The use of microwave irradiation during the synthesis allows one to obtain nanocrystalline LaFeO₃ with a higher yield and reduced crystallite and particle size within a 16 times shorter duration (3 hours) at a lower temperature of 220°C as compared to the conventional heating. The catalytic decomposition of nitrous oxide was performed over both samples, it was shown that the sample obtained under microwave conditions demonstrates enhanced activity as a catalyst: N₂O decomposes completely at 700°C over the catalyst formed at microwave conditions, while the comparative catalyst prepared by conventional heating reaches a lower conversion of only 60% at the same temperature and catalytic reaction conditions.

中文翻译：

水热微波辅助合成LaFeO3催化N2O分解

在微波和常规加热条件下，在温和条件下通过一步水热反应合成了正铁酸镧粉末。与常规加热相比，在合成过程中使用微波辐射可使人们在220℃的较低温度下以较短的16倍持续时间（3小时）获得具有更高收率和降低的微晶和粒径的纳米晶LaFeO ₃。在两个样品上均进行了一氧化二氮的催化分解，结果表明，在微波条件下获得的样品表现出增强的催化剂活性：N ₂O在微波条件下在700℃下完全分解，而在相同温度和催化反应条件下，通过常规加热制备的对比催化剂的转化率仅为60％。

更新日期：2020-09-07

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