Regulating the interaction of Ru nanoparticles and an Eu2O3 support achieves enhanced activity for ammonia synthesis

Jiemin Wang; Lin Liu; Ji Feng

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Regulating the interaction of Ru nanoparticles and an Eu2O3 support achieves enhanced activity for ammonia synthesis

机译：Regulating the interaction of Ru nanoparticles and an Eu2O3 support achieves enhanced activity for ammonia synthesis

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Development of efficient oxide supported Ru catalysts plays a pivotal role in advancing the ammonia synthesis process. Herein, three Ru/Eu2O3 analogues with nearly identical Ru nanoparticles (NPs) on Eu2O3 were constructed by dispersing similar RuO2 NPs on the surface of Eu2O3 using solid milling, impregnation and precipitation methods. Among them, the Ru/Eu2O3 with a weight loading of 3% from the precipitation method gives much higher activity than the Ru/Eu2O3 analogues from the impregnation and solid milling methods. Characterization results reveal that the Ru/Eu2O3 obtained via the precipitation method can enhance the interaction between the Ru NPs and Eu2O3 support, which can facilitate the activation of nitrogen on the surface of Ru NPs, which is the well-recognized rate determining step during the ammonia synthesis process. Therefore, the Ru NPs in Ru/Eu2O3 from the precipitation method show remarkably enhanced intrinsic catalytic activity, superior to many typical efficient Ru-based ammonia synthesis catalysts reported previously. This work demonstrates the potential of Eu2O3 as a superior support for Ru-based ammonia synthesis catalysts and offers an opportunity for designing efficient oxide supported Ru catalysts by regulating the metal-support interaction of catalysts.

机译：开发的高效氧化支持俄文催化剂在推进中起着举足轻重的作用氨合成过程。类似物几乎相同的俄文纳米颗粒(NPs) Eu2O3被分散了类似RuO2 NPs Eu2O3表面使用固体铣,浸渍和降水方法。从降水方法给加载3%活动远高于俄文/ Eu2O3类似物浸渍和固体研磨方法。表征结果表明,俄文/ Eu2O3通过降水方法可以获得提高俄文NPs之间的交互和Eu2O3支持,可以促进激活氮俄文NPs表面,这是在公认的速率决定步骤氨合成过程。显示俄文/ Eu2O3降水的方法内在的催化活性,显著提高许多典型的高效Ru-based优越氨合成催化剂的报道。这项工作表明Eu2O3的潜力上级支持Ru-based氨合成催化剂和设计提供了一个机会高效氧化催化剂支持俄文调节的金属支架相互作用催化剂。

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《Catalysis science & technology》 |2022年第17期|5339-5348|共10页
作者
Jiemin Wang; Lin Liu; Ji Feng;
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作者单位

Zhang Dayu School of Chemistry, Dalian University of Technology, Dalian 116024, China;

Dalian National Laboratory for Clean Energy, State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.;

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正文语种英语
中图分类物理化学（理论化学）、化学物理学;
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Regulating the interaction of Ru nanoparticles and an Eu2O3 support achieves enhanced activity for ammonia synthesis

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